http://www.allmusic.com/artist/muhal-richard-abrams-mn0000509696
_ Muhal Richard Abrams - Levels And Degrees Of Light (1968)
https://youtu.be/O24OFJlIRPE
_ Muhal Richard Abrams – 1-OQA+19
https://youtu.be/jHwLzxezaOA
_ 08 The Muhal Richard Abrams Orchestra - Stretch Time
https://youtu.be/ezdyMkpBevs