Although a music type much like THRASH, the term THRASH is too closly related to METAL, THRASH METAL, and the like. Don't get me wrong all mentioned above rule!!! Fastcore is a more clean sounding, usually non grinding guitars, abrasivly fast drums (blast beats), with usually mid to higher pitched screamin vocals...?
fuck on the beach, charles bronson, cold world,....etc...
Fastcore is a term for fast styles of hardcore (ie thrashcore, power violence, crustcore etc). As these genres can sometimes be difficult for people to tell apart, the term Fastcore can be applied to the lot, making the labelling of bands easier.
625 and Sound Pollution are some of the premier fastcore labels in the world