Use the vertical movement of the mouse cursor to control the pitch of the #instrument. (Pitch for y-coordinate outside of the backdrop using mouse cursor is supported.) Hold down the mouse to start the instrument, and release the mouse click to stop the instrument. Uses #sound to produce the #music, and #pen to record the #pitch.
The core idea comes from Trombone Champ. (https://store.steampowered.com/app/1059990/Trombone_Champ/) The #trombone sound comes from (https://gitlab.cs.washington.edu/kgoel/481) Related Project: Out-of-stage Mouse Position (https://scratch.mit.edu/projects/368646517/)
