After playing around with some melodies for the audio puzzle I finally came up with one simple enough for any player to memorize and repeat. Eight notes playing one at a time plus another note that acts as a “wrong answer”. For the sound itself, I experimented with two instances of Xfer Serum. I settled on two saw-based sounds, one that acts as bass and one at a higher frequency, a couple of octaves higher. I submitted it for review but Doris thought the note that is supposed to be the “wrong answer” sounds too similar to the rest, so I redone it, but this time instead of both Serum channels playing the same note two octaves apart I changed it so one of the plays two octaves and one semitone higher than the other, making it sound totally “wrong”. Everyone was happy with it this time.