Rap eh? Well I still argue that the logical inheritor of the Unaccompanied Community Singing Tradition is Karaoke. Sure there's a backing track, but there's no actual instruments involved, which is the defining aspect of the Karaoke Tradition. That said, we passed a board outside a Blackpool pub the other day advertising 'Bandaoke' - Karaoke with a live band... Imagine that...