The Four Horsemen was a sound poetry group of Canadian poets composed of bpNichol, Rafael Barreto-Rivera, Paul Dutton and Steve McCaffery that also performed concrete poetry. The group was active from 1972 to 1988. They released 2 12-inch vinyl records of their collaborative sound poetry (Nada Canadada, 1972; Live in the West, 1977), 2 cassettes (Bootleg, 1981; 2 Nights, 1988), as well as 3 print collections (Horse d'Oeuvres, 1977; A Little Nastiness, 1980; The Prose Tattoo, 1983 ) & the unique broadside Schedule For Another Place (1981). They were Canada's first sound poetry ensemble, leading directly to the formation of at least 3 further groups: Owen Sound in Toronto (Michael Dean, David Penhale, Steven Ross Smith, Richard Truhlar), Re:Sounding in Edmonton (Douglas Barbour, Stephen Scobie) & Quatuor Gualuor in Ottawa (currently jwcurry, Rachel Lindsey, Georgia Mathewson, Brian Pirie).