Can someone tell me the time signature of this song?

[Fishmon14]

http://www.youtube.com/watch?v=jtglX42p864

Only the beginning. It's in 4/4 starting at 0:11, but before that, I can't figure it out. My band director couldn't either. I'm trying to arrange it for a Nintendo themed marching show, but I need the times signature (changes with each measure and fermatas are fine)

[MaestroUGC]

Its all in 4/4 but with pick-ups for those first few notes and some strange rythmic patterns.