Honestly i would change level 2 music cuz it kinda got a bit of annoying but the OST is really good. you should also make a pateron because this game will take a long time to make im just saying.
As for the hands, honestly these demo levels werent gonna be in the final game but i was inspired by the mixed media as well as stuff like spongebob with the realistic hand, so I thought why not have a memorable thing in the level and build funny puzzle around it.
yea sorry about the repetition, wasnt able to get another track for that so the best thing I can do is to reuse the track. there will be unique track for each level in the final game!!