Fun concept! Idk the extent of playtesting before the first release but the first improvement I'd like to see as a player would be a fix for the menus, second improvement as a player would be removing the ability to spam click and get a ton of points super fast, third thing I can think of would be adding some sort of a harder level to showcase what the game might become rather than showcase just the very start. I'd like to see how this game plays out as this very early demo is pretty fun for what it is. One idea I have for how some difficulty could be added just with the music would be like "The crowd is expecting a slower song here" to give you less energy to use since there's more time between the beats.