There he discovers that the bartender, Mighty Mack (played by John Goodman) has singing talent, while getting on the bad side of the Russian mafia who have been demanding payoffs from the nightclub.
The bartender (played by John Goodman) has singing talent, while getting on the bad side of the Russian mafia. This Russian mafia have been demanding payoffs from the nightclub. There he discovers this. Mighty Mack is the bartender.