Well, you're a smart musical pony, Lyra. Can't you figure it out-...? First, what's the length of the full piece? Second, would you loop it like a flash file loops? At the very start, the song has it's own build-up, then it's main body, and so it would just loop the body, yes? How much build-up are you wanting to arange? Think of it this way: If it's played by a live organ player, it can loop as many times as you want.