[2] Haynes studied at the University of California, Santa Barbara, where she was trained in flute playing as she had thoughts of becoming a classical flautist.
[5] From the early 1980s onwards, Haynes appeared regularly in Los Angeles and Orange County clubs with the Cedar Walton Trio.
[8][9] Mackay also worked with saxophonist Sonny Stitt, trumpeters Chet Baker and Don Ellis and vocalists Vicki Hamilton and Bill Henderson.
[12] In 2012, after a break, Haynes was back singing in jazz clubs such as Vitello's[13] and towards the end of her life in 2013 sang at Newport Beach.
Others that the college is proud to mention include Oscar Brashear, Pete Christlieb, Don Ellis, Dewey Erney, and Bruce Eskovitz.