American composer and multi-instrumentalist Anthony Braxton is one of the foremost musicians in the genre of free jazz. Since the 1960s he has released more than 100 albums. He plays all of the saxophones as well as the clarinet, flute, alto flute, and piano. In 2013 he was named a 2014 National Endowment for the Arts Jazz Master. This release was recorded in 1991 with Braxton's quartet. Graham Lock writes of the release: "Braxton's quartet compositions were 'conceived as a response to the challenge of tomorrow'... That is, the challenge is to extend the tradition, not merely repeat it. And if, as Ornette said, tomorrow is the question, then I'm certain [this album] will provide some of the answers."