Thank you for trying out my game! I have indeed considered both power-ups /and or extra lives. I have been tinkering with powerups as of multipliers, but those aren't fully incorporated just yet. I'm not really set on what I want powerups for really. 🙈
I have an experimental build going with the background reacting to the music in terms of different colors and style but that isn't really fully done. It does add some cool stuff to the visuals though and is most likely getting pushed in a later updated. 🙂