Walter's Random Musings
The band is the key to your vintage dance event. Recorded music, no matter how good, will always make your event feel, somehow, incomplete.
If someone wants to get dressed up in a uniform, and march around playing "bang you're dead", it is generally not too difficult to find some kindred spirits to play with.
However, for those who are more interested in the more peaceful aspects of history, it is sometimes a bit harder.
Historical correctness, simplicity and appropriateness are what make a good costume for a living history interpreter.
In terms of historical correctness, it should, of course, be cut in a manner that is right for the time and place being portrayed. That should go without saying, but I have seen too many hoop skirts in 1880s portrayals and bustles lurking about the Civil War.
There are currently thousands of recordings, dating from the 1890s through the 1940s, which are available for free online.
Here are good vintage recording sites I know about. These are all "legit" sites, and do not include any sites where questionable filesharing might be taking place.