>> let's talk about this from a legal standpoint. we're joined by cnn legal analyst paul call las. paul's been a criminal defense attorney, also taught media law here which this is. this is a serious, important decision here when it gets to copyright. explain to me what the jury had to decide to say this song was essentially ripped off. >> copyright law is very complicated. the idea basically is it's simple. if you copy somebody else's work, that's copyright violation. but that's not what this is about. this is about copying an element of a work. and trying to decide whether that copying occurred. now, the law, of course, allows people to copy styles, general styles. that's how rock and roll developed and emerged and