FOUR HORSEMEN - Nada Canadada LPThe Four Horsemen was a sound poetry group of Canadian poets composed of bpNichol, Rafael Barreto Rivera, Paul Dutton and Steve McCaffery. They started performing in 1970 and quickly moved from radical improvisation to the use of a notational system, with an effort to develop a scoring method adequate to the group's dynamic and visceral sound show. The four piece soon became a living workshop with regular weekly rehearsals leading to the best refined