Beautiful game, but lacks in UI. I can do brain power in Muse Dash and Osu, but could barely ever get Groove here. It felt like I wasn't getting enough feedback on what the rhythm is. Guess I rely on visuals a lot. If you ever end up making a sequel, consider making the ship twitch to the beat, or add a light that does so! Looking at the bottom of the screen tended to be deadly.
My absolute inability to play this game well aside, I really loved the characters and the clear art style for sprites and CGs.