sentences:  This advertisement alone set the PTO apart from AMM and the Scratch Orchestra in its denial of modernist processes, at least at the surface level.Perhaps the most successful PTO event was a concert at the Orangery, London on 1 October 1972.On a tour of Norway with the Scratch Orchestra in 1973, however, political divisions between members Hill and Shrapnel, who wanted a more political content in PTO music (the Scratch Orchestra at this time had a strong Maoist philosophy among many of its core members), and Hobbs and White, who wanted to maintain the group as it had been.