John Coltrane’s “A Love Supreme” is 40 years old. “Revered wherever jazz is spoken, recorded (at least in part) by no less than Wynton Marsalis and Carlos Santana with John McLaughlin, praised by critics, dissected by scholars, rehearsed by young tenor saxophonists who dream of greatness, the indelible recording long since has earned a sacred place in American culture. So much, in fact, that musicians often hesitate when asked to perform this music publicly, for fear of presuming to step into the shadow of a jazz deity who addressed life and afterlife, man and God, in an oft-shattering recording.”