At Fillmore East During this time, the group began struggling with drug addictions. Everyone in the group, with the exception of the brothers, was also struggling to make a living (vocalist Gregg Allman received more money from royalty payments and Duane more from session work). In one incident, tour manager Twiggs Lyndon stabbed and killed a promoter for not paying the band; he later claimed temporary insanity. Their fortunes began to change over the course of 1971, where the band's average earnings doubled. The Allman Brothers Band had first played Fillmore East in December 1969, opening for Blood, Sweat & Tears for three
Black Beauty: Miles Davis at Fillmore West critical of its sound quality and Grossman's solos; Corea said the recording was an accurate document how that particular band of Davis' played live. "Black Beauty" was recorded in concert at the Fillmore West in San Francisco on April 10, 1970, when Davis performed as the opening act for the Grateful Dead. The performance took place soon after his studio album "Bitches Brew" had been released to stores, and he played some songs from the album. Davis led an ensemble that featured soprano saxophonist Steve Grossman, bassist Dave Holland, keyboardist Chick Corea, drummer Jack DeJohnette, and percussionist Airto Moreira. After