Breaking down whom you collaborate with into specific 'groups' is an imprecise activity. Nevertheless, here is, mainly, a selection of active and long-lived projects which have, I think, special individual qualities.

• JOHN BUTCHER GROUP: Burn, Cooper, dieb13, Edwards, Lehn, Linson, Robair.

• Steve BERESFORD:  electronics - duo / various.

• Chris BURN:  piano + "ENSEMBLE".

• The CONTEST OF PLEASURES:   Xavier Charles clarinet, Axel Dörner trumpet.

• Rhodri DAVIES:  harp.

• John EDWARDS:  double bass -  duo / quartet.

• ELISION: Australian new music ensemble.

• Gerry HEMINGWAY:  drums.

• Christof KURZMANN:  lloopp.

• Phil MINTON:  voice -  duo / trio / quartet.

• Torsten MÜLLER / Dylan VAN DER SCHYFF:  bass & drums

• Paal NILSSEN-LOVE:  drums -  duo / quartet.

• Toshimaru NAKAMURA:  no input mixing desk.

• Eddie PRÉVOST:  tam-tam & percussion -  duo / trio with John Tilbury

• Gino ROBAIR:  drums & percussion.

• THERMAL:   Andy Moore guitar, Thomas Lehn synth.

• + + +
  Akio SUZUKI: sound artist
  Mark SANDERS: drums
  Carlos ZINGARO & Günter MULLER: violin / electronics
  Bill HSU:  computer & real-time timbre recognition
  Otomo YOSHIHIDE:  guitar and turntables