looks bussin , if you want a bit more of old timey feel, you can always repeat the same couple frames a couple times as a bit of filler. a good dirty example of this is eveready harton
https://www.youtube.com/watch?v=y_jmYDzwNSk
also the sing is by Vicente Gomez who passed away. good rule of thumb for copyright is death +70 years so unfortunately the song is still under copyright
here are so resources for finding copyright free music
https://www.newgrounds.com/wiki/creator-resources/music-and-audio-resources/royalty-free-music