This musical short was included as an extra on Disk 3 of "The Jazz Singer". In addition to the film, disk 3 has many early sound films--mostly from Vitaphone (Warner Brothers). This Warner Brothers short apparently was one created using a very complicated system through which an accompanying record was synchronized with a movie camera. There were several serious setbacks for such a system (such as if a film skipped--it became out of sync for the rest of the film plus the records quickly wore out--and 20 showings was the normal life-span of the records) and even though it produced excellent sound, it was eventually replaced. The last of the Vitaphone films were made in 1930, then the studio switched to the standard sound-on-film system.
My comment about Uncle Charlie is because as the film began, I noticed that a very young William Demarest stars as a lawyer. It seems that a group of performers were brought into court for their antics and they dance and sing for the court. Why? I have no idea! However, unlike many of the Vitaphone shorts, this one tried to have some plot (no matter how thin) in addition to all the usual musical numbers. As for the numbers, the first lady had an 'interesting' (i.e., bad) voice, the dancing girls not particularly impressive (and a bit chunky), Demarest then does a comedy routine that made no sense but made me smile and a hoochie-koochie dancer followed (looking a bit like Clara Bow). At the end, get a load of the judge as well as the guy playing two clarinets at the same time! Despite the singing and dancing not being especially good, there was a certain kitschy goofiness about this that I found most endearing--and fun.
