technically, its awesome! i've crammed a heap of songs into a short time and when you get it right it sounds awesome - however, it doesnt really matter because at the end of the day, if you're playing at a club and you're mashing all these tunes up, people wont care because they don't know whats really going on. worst thing to do is mash up cheese. 90% of people digg that shit so if you start fucking around with it by chopping and changing all the time they will eventually get sick of you and bail off the dance floor.