Nothing to fix there the band story use the guitar skill other stories will rely on other skills.
Yeah, but locking whole locations behind arbitrary gateways is not the optimal way. Especially if you have a chunk of the game hinging on a very specific choice that you have to make at the very beginning. I would be completely fine if you could acquire the skill through some other means in the game. Can you confirm what the commentator above mentioned?
P.S. On a different note, fantastic work overall, and thanks for implementing cheats for qol purposes
P.P.S. By the way, the reason this is a bit frustrating is that the specific event I'm trying to get through is part of Kleio's line, not the overall band story, as far as I understand, and the only thing gating me from accessing it is the unlock condition for the studio, which means to get the full character line, you have to go with the band storyline as well.