Y'all, this is so good. The little bards are so charming, and I love how the song builds up over the course of the game. Really really good stuff. I played with mouse, but it's probably better on a control stick - I was clicking a little frantically trying to throw my bards in the right direction.
I bet there's more stuff you could do with changing your size! It was never too much of an issue to make myself small enough to fit through the smaller gaps.