Roland the Headless Thompson Gunner, by Warren Zevon.
https://www.youtube.com/watch?v=wRWCK9zGynA
“That sonabitch Van Owen blew off Roland’s Head”
Good one!
One of Warren’s finest.
He may have enjoyed this one as well:
Thompson - Bojna Čavoglave
https://www.youtube.com/watch?v=pfUCdsLgr4Y
three minutes, twenty seconds.