A wonderful, unique and innovative group! A favorite of mine is their version of "It's The Girl". https://www.youtube.com/watch?v=bRumsSXlNK0
It's good to see someone else has discovered the Boswell Sisters!They do a wonderful version of Harry Warren's 42nd Street https://www.youtube.com/watch?v=l3FpFHejr-wThen there's Irving Nerlin's Alexander's Ragtime Bandhttps://www.youtube.com/watch?v=tWlNBS5hykg&frags=pl%2CwnAnd of course Cab Calloway's Minnie the Moocher's Wedding Day with the Dorsey Brothershttps://www.youtube.com/watch?v=Epol6uCoKnU&frags=pl%2CwnYou can find the entire 5 volume set of the Boswell Sisters Collection uploaded to youtube. I recommend the original Nostalgia Arts CD's if you can get them, but it took me several years to track them all down. There's also the Storyville reissue, but it's somewhat lackluster in comparison.
@HF - Thanks for the recommendations.