Swingin’ Doors, yes, Emmylou sang it too along with many others.
“I made the prison band” was written by Tommy Collins; but Haggard’s version is great, that’s the Bakersfield sound as was Tommy Collins too:
https://www.youtube.com/watch?v=X3KzVqLPEA0
The song is a bit of a hoot; the prisoner has to put off his escape because he made the prison band, a lesser known song.
Merle was in prison and pardoned by? Not sure who, Gov. Reagan?
He did a good imitation of Johnny Cash too.
Somewhere on Youtube Merle an Marty Robbins are singing each others songs. Merle could sing exactly like Marty and Marty like Merle.