Recorded At – Maida Vale Studios Recorded At – Radio Studio DRS. Bass – Barre Phillips (tracks: 1), Barry Guy, Peter Kowald (tracks: 2 to 5) Directed By – Barry Guy (tracks: 1) Percussion – John Stevens (2) (tracks: 2 to 5), Paul Lytton (tracks: 1), Tony Oxley (tracks: 2 to 5) Piano – Howard Riley (tracks: 2 to 5), Irène Schweizer* (tracks: 1) Recorded By – Peter Pfister (tracks: 1) Reeds – Evan Parker, Larry Stabbins (tracks: 2 to 5), Paul Dunmall (tracks: 1), Peter Brötzmann (tracks: 2 to 5), Simon Picard (tracks: 1), Tony Coe (tracks: 2 to 5), Trevor Watts Reeds, Flute – Peter McPhail (tracks: 1) Trombone – Alan Tomlinson, Conrad Bauer (tracks: 1), Paul Nieman (tracks: 2 to 5), Paul Rutherford (2) (tracks: 2 to 5), Radu Malfatti (tracks: 1) Trumpet – Henry Lowther (tracks: 1), Jon Corbett (tracks: 1), Marc Charig (tracks: 1) Trumpet, Flugelhorn – Dave Spence (tracks: 2 to 5), Harry Beckett (tracks: 2 to 5), Kenny Wheeler (tracks: 2 to 5) Tuba – Melvyn Poore (tracks: 2 to 5), Steve Wick* (tracks: 1) Violin – Philipp Wachsmann. Recording Dates: Study II: February 1991 at Radio Studio DRS, Zürich Stringer: March 1980 at the Maida Vale Studio by BBC London