Hines moved to Baton Rouge, Louisiana, after leaving college to play for a gospel group and later forming his own singing group. Then as a guitar player, Hines played behind L. C. Cooke, Johnnie Taylor, Joe Valentine, Clyde McPhatter, Lowell Fulsom and Margie Hendricks, and played bass in Slim Harpo's band.
While living in Baton Rouge, Hines was invited by Roscoe Robinson to travel to Chicago, where Hines cut four tracks, intended for New York City based Scepter/Wand Records, the label with which Roscoe Robinson had recently had a national hit with "That's Enough". However, the deal with Scepter/Wand did not come through, and consequently Hines bought the masters back and leased them to the Chicago-based record label USA Records, which released two singles by Hines in 1967 and 1968.
In 1970, he was signed to Stax Records by Stax VP Al Bell. His first single on the Stax label was his own composition "Help Me Put out the Flame", featuring Hines on guitar as well as lead vocals. Subsequent records were released on the Stax subsidiary We Produce: two singles, "Electrified Love" and "Our Generation", in 1971, and in 1972, the album "Electrified". The Electrified album has received cult following since the 1990s, and in 2010, it was made available again in CD format by the UK re-release company, Ace Records, on its BGP (Beat Goes Public) label. The AllMusic review of Electrified states:
...by the mid-'90s collectors were abuzz looking for this lost LP. With back-catalog reissues still reaping beaucoup dollars for the music industry and with the help of further promotion from John Legend and the Roots covering "Our Generation" in 2010, the perfect storm was created to take another look 
In the 2000s, Hines continued his recording career, releasing an album, an EP and two singles on his own Baby Blue Records label, as well as a re-release of the early USA sides.
- Electrified (We Produce, 1972)
- There Is A Way - Inspirational Songs of Faith Hope and Love (Baby Blue, 2004)
- "Thank You Baby (For A Love Beyond Compare)" / "We're Gonna Party" (USA, 1967)
- "Sincerely Mine" / "Rain Rain Rain" (USA, 1968)
- "Help Me Put Out The Flame (In My Heart)" / "A Better World (For Everyone)" (Stax, 1970)
- "Electrified Love" / "Come On Y'all" (We Produce, 1971)
- "Our Generation" / "What Would I Do" (We Produce, 1971)
- "My Baby Wears the Lovin’ Crown / Can You Put It to Music?" (Baby Blue, 2002)
- "Everlasting Love (The Wedding Song)" (Baby Blue, 2011)
- "My Generation (re-edit) / My Generation (Cali mix) (credited to: DJ Nu-Mark Featuring Ernie Hines, Hot Plate, 2013)
- Kunta Kinte - Remembering “Roots" (2009) (Not As Beautiful As You/Kunta Kinte (the Man)/Ain't It Beautiful/All That Glitters Is Not Gold/Let Your Love Flow)
- EP compilation
- The Singles (The Early Years) (2009) (Baby Blue) (A re-release of the four tracks released on USA in the 1960s)