The true story of the rise of jazz/swing bandleaders Tommy and Jimmy Dorsey, The Fabulous Dorseys' appeal rests primarily on its basis in reality (the Dorseys portray themselves, in fact) and the many live performances recreated for the film. As for plot, well, it has none to speak of. The supporting cast is ornamental, and character development consists, for all but the last 15 minutes, of little more than establishing that the brothers don't always see eye to eye. Also, the film commands top honors when it comes to abysmal lip-synching and faux piano-playing. Nevertheless, it's clear that the point is to showcase the Dorsey's music and quell any gossip that may have been going around, at the time, about the tension between the Fabulous Dorseys, and on that level, this musical biography is pleasantly entertaining.