Originally Posted by fourstringdrums
I think you're right. I spotted this while watching the video again. Notice inside the drum, you'll see what you would normally see inside a timpani, 5 or 6 "arms" that are connected to a pedal in order to change the pitch. You can see them moving up and down as he plays.
hmmm... you're right... there is something in his flor tom!
then again, my idea also works, maybe not like that but it still changes the pitch of the drum!