An experimental musical instrument, made with Godot 3.1.
The idea is that there are multiple emitters on the screen that periodically spawn balls. When the balls touch a line, a sound is emitted. The kind of sound depends on the color of the ball, and the pitch of the sound depends on the velocity of the ball.
You can draw lines by holding the left mouse button and erase them again by pressing the right mouse button.
You can get the executables here: https://bauxite.itch.io/balldrop