This is one of the later Vitaphone shorts--known as a "Melody Master". These later musical shorts generally were more straight forward and had simpler sets and no real story to tie it all together--just a famous band of the day doing their stuff.
My summary refers to the choice of songs for this short. Like TONS of other Melody Masters, this one features "Begin the Beguine". Rarely do you hear a song repeated in the series, but on the 63 short series "Warner Brothers Big Band, Jazz and Swing Short Subject Collection", as least times you hear this particular song. Now it is a good tune but the Vitaphone shorts beat this one to death! As far as the songs go, the lady who sang was pretty good and I particularly liked the guy singing "Pross Tchai". However, nothing in the short was especially extraordinary--good but not at all extraordinary.
I mentioned this in my review of another one of Shaw's Vitaphone shorts that looking at the guy it was hard to imagine that he was married eight times--and to the likes of Lana Turner and Ava Gardner.