AMM, percussionist Eddie Prévost and pianist John Tilbury. Cornelius Cardew's 'February Piece 1959'; 'February Piece 1960'; 'February Piece 1961'; '4th System'; 'Winter Potato No 1'; 'Material
Unintended piano music'; and Improvisation. (Note: sporadic performances of Paragraphs from Cardew's 'The Great Learning';
The Front Room at Queen Elizabeth Hall, 10am-6pm; free.)