Saloonatics (2002)

Quiet Storm is a small town rock band playing for peanuts whom get mixed up with a ruthless cancer-stricken gangster, named Gianno 'Flat' Donato, whom owns the nightclub they are performing in when their guitarist, Tommy, owes money on a personal loan to Flat while a private investigator, named Vito, is investigating Flat hoping to catch something to blackmail him to save up to marry a ravishing divorcee, named Janelle, while Flat's son, Tony, is having an affair with Jennifer, the wife of Chuck Corby the lead singer of Quiet Storm, and it's her that comes up with the idea to rip off Flat during a money laundering scheme he has going which leads to Chuck, Tommy, and keyboardist Walt hoping to score the perfect plan, which is complicated by Flat's thugs, Bones and Mace, whom have an agenda of their own.