My last stand music would be hauntingly melancholy music, a quiet tribute to the end of life (even going down fighting--I assume my final acts would be in dramatic slow motion). My first thought was that it had to be something by Kate Rusby or Eva Cassidy.
I Am Stretched On Your Grave - Kate Rusby - YouTube
My second thought was Eric Whitacre's "A Boy and a Girl," which sums up life in a three-verse setting of an Octavio Paz poem translation.
A Boy and a Girl - YouTube
I also remembered one of the most moving arrangements of the folk song "Wayfaring Stranger," which I was lucky enough to sing a few years back. One line of text has always captured my attention, "I'm going there to see my father; he said he'd meet me when I come." While my father is still alive and kicking (if seriously balding), that's something he would promise me, and something I'd look forward to in dying.
Wayfaring Stranger - BYU Choirs - YouTube
If'n I had to go in a blaze of non-slow-motion glory, I hope Uematsu's "Other World" from FFX would be playing.
HD 1080p Final FAntasy X Intro - Otherworld - YouTube
Jam it back in, in the dark.