In January 1974, COUM returned their attention to music, collaborating with the Canadian artist Clive Robertson to produce "Marcel Duchamp's Next Work", which they premiered at an arts festival in the Zwarte Zaal Royal Conservatory of Ghent in Ghent, Belgium. COUM's next major work was "Couming of Age", performed in March 1974 at the Oval House in Kennington, South London. After the show, they were approached by an audience member, Peter Christopherson, who shared many of their interests; P-Orridge and Tutti nicknamed him "Sleazy" because of the former's particular interest in the sexual aspects of COUM's work. Christopherson began to aid them using their skills as a photographer and graphic designer, and would first perform with them in their March 1975 work "Couming of Youth". In May 1974, COUM issued a manifesto published on an A3 double-sided sheet titled "Decoumpositions and Events".