Single: 2 or 3 songs meant to promote and sell the sibgle, an EP to me is an album that doesn't have to do that. It, to me, is a mini-album that you can do anything with. The argument of an album being less than 29 minutes is to be argued, if you listened to a good amount of punk/hardcore records. As for the whole less than 10 minutes thing, that is to be .argued, since some albums have less than that and span over 30 mns (i.e. Explosions in the Sky, Mono albums). Even a Brakes album I heard was 26 minutes