the concept itself is interesting, but i'm worried that it could get very repetitive. sound memory minigames are usually put inside of other larger games to add variety...
at the end of the day, it's a turn based rpg with an added layer of potential annoyance. as the game goes on and the notes become more and more of an intricate "music", i could see the appeal of a rhythm turn based rpg, but as of now it's essentially toddler tier.
(finally a game i don't suck at, wooo!)