4.0, also known as The Four Phonics, was a vocal quartet from Atlanta. The boy band consisted of Jason Sylvain, Tony Hightower, Ron Jackson, and Sammy Crumbley. As a group, they released one, self-titled album in 1997 with help from Organized Konfusion, Stokley Williams, and Jimmy Jam & Terry Lewis (through whom the group landed performance credits on Lionel Richie’s Louder Than Words). 4.0 featured the single “Have a Little Mercy” and the song “Oh Baby,” the latter of which appeared on the soundtrack to the movie Money Train.

The group, however, is remembered mostly for their contributions to several Dungeon Family records. In 1995 they provided backings on songs by Pebbles, Society of Soul, and Goodie Mob, whose 4.0-assisted “Soul Food” was released as a single the following year. 1998 marked two more features; OutKast’s “Hold On, Be Strong” and “Synthesizer” (which featured the legendary George Clinton.)