The Right Connections (1997)

Upon learning that their mother owes $5,000 to the IRS, a quartet of siblings endeavor to find a way to scare up the cash. Three of them decide to sign up for a local hip-hop contest. Unfortunately the trio really stinks. Fortunately, the youngest would-be singer meets up with ex-rap star Kendrick Bragg (AKA Kick'nBak Flash, played by Hammer/AKAStanley Kirk Burrell). A kindly fellow, he decides to help them out. But with their lack of talent and less than a week to go, things look grim until the group is able to convince their reluctant fourth sibling (the one with real talent) to pitch in for their mama and do his stuff on stage.