[1] Born in Toledo, Ohio, Stubblefield started his career in 1968 playing keyboards with the Motown Review performers including the Four Tops, Martha Reeves, The Temptations, Marvin Gaye, Stevie Wonder and Rare Earth.
King, Ike & Tina Turner, Curtis Mayfield, Al Green, Eric Clapton, Rod Stewart, The Jerry Garcia Band, Johnny Adams, Bobby Caldwell, Boz Scaggs, Esther Phillips, The Pointer Sisters, and others.
From 1976-1988, Stubblefield worked as a studio musician, composer, songwriter and producer with artists including Quincy Jones, Phil Spector, Jim Capaldi, Wendy Waldman, Larry Lee, Allan Blazek, Kevin J. O'Brien, Esq.
In 1990, Stubblefield moved to Vancouver, British Columbia, Canada, and opened The Purple Onion, a two-story warehouse club with three separate music venue rooms, where he performed with his band, Is Not Was, and hosted shows by Canadian and international artists.
In Atlanta, Stubblefield performed at Variety Playhouse, The Roxy, The Dogwood Festival, and worked with Sonny Emory, Sam Skelton, Count M'Butu, The Derek Trucks Band, Jeff Sipe, Caroline Aiken, Jimmy Herring, Bruce Hampton, Bobby Lee Rodgers, The Codetalkers, Francine Reed, and Susan Tedeschi.