When given a custom 4-digit pin, my special algorithm will provide a pseudorandom chain of notes along the Pentatonic Scale! Same pin, same song. These songs may sound weird, but at least they aren't too bad!
If the song were to loop, the intro would happen once, then the rest would eternally loop! By the way, because of the nature of this code, at the end of each of the two segments, there may even be a temporary low-pass cutoff effect!