Impressive implementation of reversed sounds to complete the hardest challenge. It's pretty solid although a bit repetitive but that could be due to trying to make it a palindrome. My two critiques would be that the first song sounds a bit muddy, and the "antiparallel" chiptune synth sounds a tad dissonant. (it kind of ummm *coughs* remind me of crazy bus but just a lil bit yk only a lil bit)