http://www.no-mind.org/improvMeeting/

«The Seattle Improv Meeting is a group dedicated to exploring structured improvisation. Utilizing graphical, textural, Flash, verbal and other non-idiomatic scores we examine the intersection of composition and improvisation. Our primary focus has been Cornelius Cardew’s epic graphic score Treatise which we currently are in the midst of a complete playthrough, at the rate of 4-6 pages per session. Most of our sessions are recorded primarily to track our development, and are available on the meeting records pages as space permits».