The background music in the game is all remixes of the song "Popcorn", which is a very very famous piece for MOD composers. This song originated in the mid 70's by a group called "Hot Buttered" and is probably the first song ever to meet the genre of Techno.
Since then, dozens and dozens of remixes have been made. The 1982 game Pengo by Sega uses the same music (which is the game Wampo is based off of). I had to modify some of the tunes to better match the level that you're on (yes, I do music as well), but it was mostly easy to find remixed versions of the songs that fit the theme already!
So there's yer quality random trivia for the day! Everyone's beaten the arcade mode of this game by now, right?? I want high scores!