I was watching my Led Zeppelin concert DVD last night (one of my all-time favs), and I noticed that at the beginning of Whole Lotta Love, it seems that Bonham came in prematurely (about 7-8 seconds in). He then stops playing and comes back in when he did on the record version. Right afterward, Page looks over and appears to be laughing. Do you think Bonham meant to play that part on the snare? Or did he get overly aggressive and start too soon? Or just fooling around?