Puzzling Synthesizer

So I've been working on this from about 3:30 AM to now (5:52 AM) XD and i worked on it for about 3 hours yesterday too. gosh I take so long... LOL Just wanted to post a WIP. i need to finish drawing/ coloring the background , shade, and maybe even add some effect to it later....idk The puzzle heart looks horrible... and I might change the headphones.

Inspired by this song: [link] (Happy Synthesizer - Luka and Gumi)

EDIT 1/5/12: colored the bg
EDIT 4/10/12: I've decided not to do anything more to it, since it looks ok like this~