Anyway, could someone please explain to me, what do DJs actually do during a track? I'm very new to all this, but I know that DJs make their sets, beatmatch the tunes, mix them in and out, EQ the kicks out during the first few bars, gauge the crowd reaction to choose an appropriate song etc. etc. That I know. But when a tune is actually playing, you still see them, you know, constantly turning knobs and doing other stuff. What exactly are they doing? I know you can keep on adjusting the EQ, but surely there's more to it.
Take Tiesto here for example (basically, any DJ, any video): http://www.youtube.com/watch?v=VguK7gwMjAc
It's his track, he'd already mixed it in, and it's still far from the next track to start beatmatching it (even though that might be unnecessary in this case

Thanks
