Terrapin Resources

The On-Screen Piano

This program creates a piano on screen that you can play with your mouse. There are several procedures. Some of them do the drawing, while others detect the click of a mouse and compute the key which the mouse is over.

The end the program, click the Stop sign.


  • Procedure: PIANO
  • Description: Creates a clickable on-screen piano
  • Level: Intermediate
  • Tags: Music, Instruments, Play, Turtle, Drawing, Mouse