diff --git a/Lab00App-build/Lab00App-code/src/main/java/ch/heigvd/res/lab00/Cello.java b/Lab00App-build/Lab00App-code/src/main/java/ch/heigvd/res/lab00/Cello.java
new file mode 100644
index 00000000..4f5e0be1
--- /dev/null
+++ b/Lab00App-build/Lab00App-code/src/main/java/ch/heigvd/res/lab00/Cello.java
@@ -0,0 +1,19 @@
+package ch.heigvd.res.lab00;
+
+
+public class Cello implements IInstrument {
+
+    private String sound ;
+    private String color ;
+    private int volume ;
+
+    public Cello () {
+        this.sound = "boum boum" ;
+        this.color = "wooden" ;
+        this.volume = 40 ;
+    }
+
+    public String play () {return sound ;}
+    public String getColor () {return color ;}
+    public int getSoundVolume() {return volume ;}
+}
\ No newline at end of file