Like the title says, this one features Hoagy Carmichael. But in the original title it also included mention of the singer Jack Teagarden--though it's not listed that way on IMDb.
This is a very unusual short because it's been included on a DVD of almost exclusively Black performers of the time. Now this isn't a complaint--just more of an observation about its inclusion in the collection, as Carmichael and these rest of his band-mates are all very White and their style isn't quite that of the rest of the performances--though they do perform some White versions of Black soul music--which, frankly, comes off as very strange and sanitized. White people using Black slang might remind you a bit of the original Amos 'n Andy (who were White guys on radio parodying Blacks) but the film seems less overtly racist--just insensitive in today's mindset. Overall, watchable but not exactly inspiring. And, Carmichael was a lot better than this material and should have been shown doing the sort of music he did best.