Roger Waters and Nick Mason met while studying architecture at the London Polytechnic at Regent Street. They first played music together in a group formed by Keith Noble and Clive Metcalfe with Noble's sister Sheilagh. Richard Wright, a fellow architecture student, joined later that year, and the group became a sextet, Sigma 6. Waters played lead guitar, Mason drums, and Wright rhythm guitar (since there was rarely an available keyboard). The band performed at private functions and rehearsed in a tearoom in the basement of the Regent Street Polytechnic. They performed songs by the Searchers and material written by their manager and songwriter, fellow student Ken Chapman.