The Ballad of Jessee James - the song about Jessee being murdered by the Ford brothers, goes like this...
https://www.youtube.com/watch?v=VCxElZNJuM8
One of my absolute favorite Westerns - this about the James and Fords. And Youngers, Millers, Belle & Sam Starr.
https://en.wikipedia.org/wiki/The_Long_Riders
But my favorite song from the movie, as requested by gang member Ed Miller, is
I' m a good ole Rebel
https://www.youtube.com/watch?v=omqqGViq3Ng