Actually saw and heard this group twice in 1967 at "The Penthouse" in Seattle. I was underage but placed (with ginger ale) next to Toney Williams [my age-thin tie-shiny suit] with a drummer friend from Shoreline C.C.[I "play" Tenor Sax].
The Greatest! My "Holy Grail jazz group"!
I was amazed at the poor turnout. 7-8 "pairs". Mostly local musicians. No wonder Miles went "festival". Could play to much bigger crowds and bring in better bread.