Thanks for checking it out! It’s true the game lacks some gameplay depth. I focused a lot of getting the visuals and “big picture” stuff, but you and several others have pointed out the fiddly/notfunness of the controls. I like your idea about a proper ear tuning game though. I’m also an instrumentalist and I think among people who have tried to tune a guitar before, it might be a good, shared experience to put in a game loop!
BTW you can turn off the music in the options if you prefer to hear the resonators more clearly :D