Originally issued in two volumes on their own SRP Records in 1966 & 67 as In Concert At Yale University and Nommo, the duo of drummer/percussionist Milford Graves and pianist Don Pullen are heard live in in this excitingly energetic and revelatory concert at Yale University, redefining the roles of their instruments during the most exploratory period of free jazz.

Three of the most important virtuoso instrumentalists in improvisation in an historic and intense musical meeting, recorded and mixed by Bill Laswell.