In the '70s he gravitates towards the then new free/impro scene and works with artists like Evan Parker, John Stevens. He also joins The Spontaneous Music Ensemble and plays with the Globe Unity Orchestra. He releases two albums on ECM round about the same time: 'Gnu High' and 'Deer Wan'. Keith Jarrett - and others - join him as sidemen on the former. He also tours with the Anthony Braxton Quartet for five years.