diff --git a/note_seq/__init__.py b/note_seq/__init__.py
index 3f5d25d..7182c1a 100644
--- a/note_seq/__init__.py
+++ b/note_seq/__init__.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/abc_parser.py b/note_seq/abc_parser.py
index dc03c0c..1ba7f6b 100644
--- a/note_seq/abc_parser.py
+++ b/note_seq/abc_parser.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/abc_parser_test.py b/note_seq/abc_parser_test.py
index 0a6284f..0ddf941 100644
--- a/note_seq/abc_parser_test.py
+++ b/note_seq/abc_parser_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/alignment/align_fine.py b/note_seq/alignment/align_fine.py
index 06f4eea..affa1c3 100644
--- a/note_seq/alignment/align_fine.py
+++ b/note_seq/alignment/align_fine.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/alignment/align_fine_lib.py b/note_seq/alignment/align_fine_lib.py
index 7244f2c..84dabcd 100644
--- a/note_seq/alignment/align_fine_lib.py
+++ b/note_seq/alignment/align_fine_lib.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/audio_io.py b/note_seq/audio_io.py
index 85bbf97..a0e149a 100644
--- a/note_seq/audio_io.py
+++ b/note_seq/audio_io.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/audio_io_test.py b/note_seq/audio_io_test.py
index dd28404..511097b 100644
--- a/note_seq/audio_io_test.py
+++ b/note_seq/audio_io_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/chord_inference.py b/note_seq/chord_inference.py
index 436e944..f398c74 100644
--- a/note_seq/chord_inference.py
+++ b/note_seq/chord_inference.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/chord_inference_test.py b/note_seq/chord_inference_test.py
index bf4f449..34bb651 100644
--- a/note_seq/chord_inference_test.py
+++ b/note_seq/chord_inference_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/chord_symbols_lib.py b/note_seq/chord_symbols_lib.py
index e05346a..93e8e3f 100644
--- a/note_seq/chord_symbols_lib.py
+++ b/note_seq/chord_symbols_lib.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/chord_symbols_lib_test.py b/note_seq/chord_symbols_lib_test.py
index d56d6ef..89418a3 100644
--- a/note_seq/chord_symbols_lib_test.py
+++ b/note_seq/chord_symbols_lib_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/chords_encoder_decoder.py b/note_seq/chords_encoder_decoder.py
index 4967a5a..737640c 100644
--- a/note_seq/chords_encoder_decoder.py
+++ b/note_seq/chords_encoder_decoder.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/chords_encoder_decoder_test.py b/note_seq/chords_encoder_decoder_test.py
index 6693d4f..8f2bb88 100644
--- a/note_seq/chords_encoder_decoder_test.py
+++ b/note_seq/chords_encoder_decoder_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/chords_lib.py b/note_seq/chords_lib.py
index 147af9f..96d1199 100644
--- a/note_seq/chords_lib.py
+++ b/note_seq/chords_lib.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/chords_lib_test.py b/note_seq/chords_lib_test.py
index 2bb4f7a..83b4ebf 100644
--- a/note_seq/chords_lib_test.py
+++ b/note_seq/chords_lib_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/constants.py b/note_seq/constants.py
index af41f84..4d34996 100644
--- a/note_seq/constants.py
+++ b/note_seq/constants.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/drums_encoder_decoder.py b/note_seq/drums_encoder_decoder.py
index 27b06b7..529d9ea 100644
--- a/note_seq/drums_encoder_decoder.py
+++ b/note_seq/drums_encoder_decoder.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/drums_encoder_decoder_test.py b/note_seq/drums_encoder_decoder_test.py
index 858fd09..ad963d6 100644
--- a/note_seq/drums_encoder_decoder_test.py
+++ b/note_seq/drums_encoder_decoder_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/drums_lib.py b/note_seq/drums_lib.py
index 03fdbff..98576ff 100644
--- a/note_seq/drums_lib.py
+++ b/note_seq/drums_lib.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/drums_lib_test.py b/note_seq/drums_lib_test.py
index 458c076..f89aa0e 100644
--- a/note_seq/drums_lib_test.py
+++ b/note_seq/drums_lib_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/encoder_decoder.py b/note_seq/encoder_decoder.py
index d78f8a7..1c4ea29 100644
--- a/note_seq/encoder_decoder.py
+++ b/note_seq/encoder_decoder.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/encoder_decoder_test.py b/note_seq/encoder_decoder_test.py
index 34ae635..4fa8d08 100644
--- a/note_seq/encoder_decoder_test.py
+++ b/note_seq/encoder_decoder_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/events_lib.py b/note_seq/events_lib.py
index 70051ea..6f2be0b 100644
--- a/note_seq/events_lib.py
+++ b/note_seq/events_lib.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/events_lib_test.py b/note_seq/events_lib_test.py
index ce20fd7..873a114 100644
--- a/note_seq/events_lib_test.py
+++ b/note_seq/events_lib_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/lead_sheets_lib.py b/note_seq/lead_sheets_lib.py
index e37959f..d2c56ec 100644
--- a/note_seq/lead_sheets_lib.py
+++ b/note_seq/lead_sheets_lib.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/lead_sheets_lib_test.py b/note_seq/lead_sheets_lib_test.py
index b2afc3c..11e357a 100644
--- a/note_seq/lead_sheets_lib_test.py
+++ b/note_seq/lead_sheets_lib_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/melodies_lib.py b/note_seq/melodies_lib.py
index 3a4cb7a..f8059bb 100644
--- a/note_seq/melodies_lib.py
+++ b/note_seq/melodies_lib.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/melodies_lib_test.py b/note_seq/melodies_lib_test.py
index 155f652..3d40900 100644
--- a/note_seq/melodies_lib_test.py
+++ b/note_seq/melodies_lib_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/melody_encoder_decoder.py b/note_seq/melody_encoder_decoder.py
index 67d845e..626dcb0 100644
--- a/note_seq/melody_encoder_decoder.py
+++ b/note_seq/melody_encoder_decoder.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/melody_encoder_decoder_test.py b/note_seq/melody_encoder_decoder_test.py
index 495a6c7..5148301 100644
--- a/note_seq/melody_encoder_decoder_test.py
+++ b/note_seq/melody_encoder_decoder_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/melody_inference.py b/note_seq/melody_inference.py
index 70d3652..8306a36 100644
--- a/note_seq/melody_inference.py
+++ b/note_seq/melody_inference.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/melody_inference_test.py b/note_seq/melody_inference_test.py
index abb2723..89d8d9c 100644
--- a/note_seq/melody_inference_test.py
+++ b/note_seq/melody_inference_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/midi_io.py b/note_seq/midi_io.py
index 269f02c..2de94c9 100644
--- a/note_seq/midi_io.py
+++ b/note_seq/midi_io.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/midi_io_test.py b/note_seq/midi_io_test.py
index c1b9374..6be31b4 100644
--- a/note_seq/midi_io_test.py
+++ b/note_seq/midi_io_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/midi_synth.py b/note_seq/midi_synth.py
index a3867a3..023e520 100644
--- a/note_seq/midi_synth.py
+++ b/note_seq/midi_synth.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/musicnet_io.py b/note_seq/musicnet_io.py
index ea28eac..8f41bfa 100644
--- a/note_seq/musicnet_io.py
+++ b/note_seq/musicnet_io.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/musicnet_io_test.py b/note_seq/musicnet_io_test.py
index 94ebd39..877d8c9 100644
--- a/note_seq/musicnet_io_test.py
+++ b/note_seq/musicnet_io_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/musicxml_parser.py b/note_seq/musicxml_parser.py
index f6d0ec7..e39a035 100644
--- a/note_seq/musicxml_parser.py
+++ b/note_seq/musicxml_parser.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/musicxml_parser_test.py b/note_seq/musicxml_parser_test.py
index 02f46bd..480d42a 100644
--- a/note_seq/musicxml_parser_test.py
+++ b/note_seq/musicxml_parser_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/musicxml_reader.py b/note_seq/musicxml_reader.py
index 013ff56..a60e75f 100644
--- a/note_seq/musicxml_reader.py
+++ b/note_seq/musicxml_reader.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/notebook_utils.py b/note_seq/notebook_utils.py
index 52ab9e1..ce9ad4f 100644
--- a/note_seq/notebook_utils.py
+++ b/note_seq/notebook_utils.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -149,7 +149,7 @@ def _sequence_to_pandas_dataframe(sequence):
 
     return pd.DataFrame(pd_dict)
 
-  fig = bokeh.plotting.figure(tools='hover,pan,box_zoom,reset,previewsave')
+  fig = bokeh.plotting.figure(tools='hover,pan,box_zoom,reset,save')
   if width:
     fig.width = width
   if height:
diff --git a/note_seq/performance_controls.py b/note_seq/performance_controls.py
index d73f2fe..e10ad65 100644
--- a/note_seq/performance_controls.py
+++ b/note_seq/performance_controls.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/performance_controls_test.py b/note_seq/performance_controls_test.py
index 36d1037..f217bd6 100644
--- a/note_seq/performance_controls_test.py
+++ b/note_seq/performance_controls_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/performance_encoder_decoder.py b/note_seq/performance_encoder_decoder.py
index b670a4f..bef65fa 100644
--- a/note_seq/performance_encoder_decoder.py
+++ b/note_seq/performance_encoder_decoder.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/performance_encoder_decoder_test.py b/note_seq/performance_encoder_decoder_test.py
index f5347f3..10f7bb9 100644
--- a/note_seq/performance_encoder_decoder_test.py
+++ b/note_seq/performance_encoder_decoder_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/performance_lib.py b/note_seq/performance_lib.py
index a4b1e53..563db64 100644
--- a/note_seq/performance_lib.py
+++ b/note_seq/performance_lib.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/performance_lib_test.py b/note_seq/performance_lib_test.py
index 02bca14..0bdd7cb 100644
--- a/note_seq/performance_lib_test.py
+++ b/note_seq/performance_lib_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/pianoroll_encoder_decoder.py b/note_seq/pianoroll_encoder_decoder.py
index db04019..19a6e70 100644
--- a/note_seq/pianoroll_encoder_decoder.py
+++ b/note_seq/pianoroll_encoder_decoder.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/pianoroll_encoder_decoder_test.py b/note_seq/pianoroll_encoder_decoder_test.py
index 3ef8487..b64342b 100644
--- a/note_seq/pianoroll_encoder_decoder_test.py
+++ b/note_seq/pianoroll_encoder_decoder_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/pianoroll_lib.py b/note_seq/pianoroll_lib.py
index 56be941..10588ef 100644
--- a/note_seq/pianoroll_lib.py
+++ b/note_seq/pianoroll_lib.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/pianoroll_lib_test.py b/note_seq/pianoroll_lib_test.py
index 4940d89..734762a 100644
--- a/note_seq/pianoroll_lib_test.py
+++ b/note_seq/pianoroll_lib_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/protobuf/__init__.py b/note_seq/protobuf/__init__.py
index c97725d..049364f 100644
--- a/note_seq/protobuf/__init__.py
+++ b/note_seq/protobuf/__init__.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/protobuf/compare.py b/note_seq/protobuf/compare.py
index 9da68d9..8558f83 100644
--- a/note_seq/protobuf/compare.py
+++ b/note_seq/protobuf/compare.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/protobuf/generate_pb2_py.sh b/note_seq/protobuf/generate_pb2_py.sh
index 31a8042..b7d26c8 100755
--- a/note_seq/protobuf/generate_pb2_py.sh
+++ b/note_seq/protobuf/generate_pb2_py.sh
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/protobuf/generator_pb2.py b/note_seq/protobuf/generator_pb2.py
index 19b7a9f..10f507c 100644
--- a/note_seq/protobuf/generator_pb2.py
+++ b/note_seq/protobuf/generator_pb2.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/protobuf/install_protoc.sh b/note_seq/protobuf/install_protoc.sh
index 8dddb32..a0ce0b7 100755
--- a/note_seq/protobuf/install_protoc.sh
+++ b/note_seq/protobuf/install_protoc.sh
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/protobuf/music_pb2.py b/note_seq/protobuf/music_pb2.py
index 9ca3ce7..c6d9f01 100644
--- a/note_seq/protobuf/music_pb2.py
+++ b/note_seq/protobuf/music_pb2.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/sequences_lib.py b/note_seq/sequences_lib.py
index 2cb1a13..da7a95b 100644
--- a/note_seq/sequences_lib.py
+++ b/note_seq/sequences_lib.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/sequences_lib_test.py b/note_seq/sequences_lib_test.py
index 386a0c8..ebee1ac 100644
--- a/note_seq/sequences_lib_test.py
+++ b/note_seq/sequences_lib_test.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/testing_lib.py b/note_seq/testing_lib.py
index 7b753d7..9e5bd62 100644
--- a/note_seq/testing_lib.py
+++ b/note_seq/testing_lib.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/note_seq/version.py b/note_seq/version.py
index ba107e2..d5d5b36 100644
--- a/note_seq/version.py
+++ b/note_seq/version.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/setup.py b/setup.py
index 0288cec..73f206f 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/update_pip.sh b/update_pip.sh
index c4da20f..34b90a3 100644
--- a/update_pip.sh
+++ b/update_pip.sh
@@ -1,4 +1,4 @@
-# Copyright 2023 The Magenta Authors.
+# Copyright 2024 The Magenta Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.