Battle Hymns of the UCM

What songs of Old Earth do you imagine the UCM singing to bolster moral and drown out the sound of shrapnel bouncing off the canopy of their ravens as they strive to liberate their ancestral homes?

For example:
https://www.youtube.com/watch?v=IoT7nTT8kLc

LOL. Jellyhead... *snicker*...

Probably just classical music like: https://www.youtube.com/watch?v=eBShN8qT4lk&list=RDEMRd7FWO6CePBbL1YZg0gyPA.

Rolling Bolders - Aint NO jelly like a dead jelly
Ain't no Jelly like a dead Jelly, I can get the satisfaction.
'Cause I try and I try and I try and I try.
I can get Jelly, I can get Jelly.

When I'm drivin' in my Bear, and the LT comes on the comms.
He's tellin' me more and more about some useless Jelly.
Supposed to fire my gun.

I can get Jelly. Oh, ye, Oh, ye. Hey, hey, hey.
That's what I say.
Ain't no Jelly like a dead Jelly, I can get the satisfaction.
'Cause I try and I try and I try and I try.
I can get Jelly, I can get Jelly.

When I'm watchin' my sights and LT comes on and tells me.
How White my buddy can be.
But, he can't be CO 'cause he doesn't smoke.
The same cigarettes as me.

I can get Jelly. Oh, ye, Oh, ye. Hey, hey, hey.
That's what I say.
Ain't no Jelly like a dead Jelly, I can get the satisfaction.
'Cause I try and I try and I try and I try.
I can get Jelly, I can get Jelly.

Somehow sounds like the UCM hymn
https://www.youtube.com/watch?v=mjY6awCr2_c