Very original integration of the theme, i like that you put the "rewind" mechanic as a sort of stand in for a lives system, so if you do well after dying, you can let it charge for a bit and as you progress always have some rewind left to learn and try to pass the moment you died. Spritework is also real good, and i like the chill tune that's there in the background.
Don't know what much else i could say, gameplay seems solid.
Well done, especially for a solo entry :)