In 1999, percussionist Eddie Prévost began convening an improvisation workshop in London. From its earliest days the pianist Sebastian Lexer and saxophonist Seymour Wright were among its most committed and creative members, and the relationship eventually developed into significant musical partnerships. Impossibility in its Purest Form documents their distinctive approach to improvisation. Contributing are Sebastian Lexer – piano+, Eddie Prévost – percussion and Seymour Wright – alto saxophone.