Loop sampling

Over the past little while, I've noticed a couple of quite cool videos involving one person making a whole lot of live music using a loop sampler. Here are some examples... This is a guy called Foy Vance on a BBC Northern Ireland music show. Initially, I thought he had a drummer and some guitarist in the background - that is until I saw him sampling his voice. This is a guy called Shlomo who's a UK beatboxer performing on the BBC's Glastonbury coverage. It's amazing how quickly he builds up the layers of sound. Somehow having this as a voicemail answer message doesn't seem to do it justice...