I was playing this game with my nephew (I don't know why I said that because I play it just as frequently when my nephew isn't around) and while on Flynn's Airship, there is a music box you can stand next to that does a little remixed version of the main overworld theme. He had the Drobot character in which has a robotic voice anyway and the whole song just sounded cool.
A remix around that specific and fairly obscure bit of music would be quite awesome!