Press the space key to start the cymbal beat (which then goes on until you stop the program). Press the left arrow to play a bass chord and the right arrow to play a beat-boxing rhythm. Pressing the top arrow will give you three electric guitar chords and the down arrow will play a random piano note. Pressing a, s, or d will play drum jam, kick back, or cymbal echo.
I made the project with the help of the starter project Make Music.