Dude , have a listen, he watchs the cues & linen up the cuts for each track & Wich ever part of the scratch he wants to use , if he was using just normal vynal he'd be lookin for markers on the record? Go have a look @ a qbert video, he stares @ the vynal, he's not in sum mystical music trance like Angus on guitar, he's a DJ he's gotta see the tracks to know wot to play & wen to play it ??