(Java 1.19)
This Redstone machine makes random music.
Every second tick it plays a random selection of notes from two octaves in a pentatonic scale.
Every eight ticks it plays one of four possible cords at random (C Major, F Major, G Major or A Minor)
Every 36 ticks it plays a drumbeat.
Every 36 ticks there is a one in three chance that the instrument changes.
It uses all instruments in the game (1.19) except for the Pumpkin (Didgeridoo)