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I need about a 30 second - 2 minute 20's swing/jazz song preferably copywrite free and with vocals of some sort.
I'm using it for a kind of creepy fight scene.

TreasureBoxFilms
... [19]20's swing/jazz song preferably copywrite free and with vocals of some sort..

In the UK, the term of copyright in a literary, dramatic, musical or artistic work is limited to the life of the author plus 70 years, while the term of copyright in a sound recording is limited to 50 years from the date of recording.

http://www.openmusicarchive.org/browse_tag.php?tag=1920s

You can also use:

http://deweymusic.org/

to search the Internet Music Archive. There's a lot of jazz/swing public domain music there.