Object score notation - Scratch Ochestra
The Scratch Orchestra was an experimental musical ensemble founded in the spring of 1969 by Cornelius Cardew, Michael Parsons and Howard Skempton.
The Orchestra reflected Cardew’s musical philosophy at that time. This meant that anyone could join, graphic scores were used (rather than traditional sheet music), and there was an emphasis on improvisation. The Scratch Orchestra arose from Cardew’s ’Experimental Music’ class at Morley College, London, which served as a venue for extra rehearsals for Scratch Orchestra concerts, but Scratch Orchestra rehearsals were also held separately.