The song, and group for that matter, are notable for featuring character actor Daryl "Chill" Mitchell, who you may remember as wheelchair-bound Eli on the TV show "Ed," or the black guy in "Galaxy Quest," or the newbie in "Sgt. Bilko." (Trivia: he played a character named Chill both on "The Fresh Prince of Bel-Air" and in the first two House Party movies.)
This also points to the very likely fact that the other two members of the group are named "Groove" and "B".
Hip Hop Music - Groove B. Chill
Who said rap ain't music? Please tell me how
Elvis Presley ain't do nothin' that we ain't doin' now
Sellin' records by the millions, girls gettin' laid
We must be doin' somethin' brother, because bills gettin paid
(You mean rap is sellin'?) Nah rap done sold
We been overcame but you just wasn't... told.