He served as the musical director, guitar player, and live show arranger for Motown vocal group The Temptations from 1964 until 1982.
Grant also met Martin Luther King Jr., Julie Nixon Eisenhower, Jesse Jackson, Elton John, and The Beatles, and appeared on many television shows.
Grant played on select Motown studio sessions' with the Funk Brothers from 1964 to 1970, including Gladys Knight & the Pips "I Heard It Through the Grapevine".
A current project, "Flashbacks and Newtraks” is a radio show featuring interviews, entertainment news, oldies music, and many points of view by him and his co-host Sylkie Green.
When Grant gives lectures, he sometimes shares the podium with Motown insiders such as Don Foster (former Supremes and Temptations manager) and TV writer/Motown historian, Ruth Adkins Robinson.