This is a great movie that actually features the Dorsey's themselves.  The movie tells the story of Jimmie and Tommy Dorsey growing up and their start to the music business.  The story is good and the music is, of course, great.  My only complaint is that I wish the story would have featured more about their career and less about how the two couldn't get along and so they went their separate ways until their father died when they made up.  It's still a good movie and I do recommend it but if you're like me in wanting to learn more about the career you might actually prefer The Glenn Miller story.