Thanks for your submission! These aren't quite the right feel I'm going for. This direction sort of looks like a logo you'd see on something like a musical instrument like a keyboard.. or maybe a logo on a music magazine. I think it should be more refined looking, more elegant.
I like the new ideas, thanks! The pictorial graphics are cool looking, but I'm not getting the sense of improving music, redoing it, making it better. Unfortunately the power switch idea has been overused already, but there might be some other way to represent this idea.