Apologies in advance, if the question is rhetorical.
I have limited experience as a hospice volunteer, providing music for patients in extremis along with their friends and families.
No special music is required for death vigil. By and large, most people I have encountered appreciate the same music they enjoyed while fully engaged in life. This includes songs of childhood, special occasion music such as wedding songs, the couples' "our song" etc. All the songs that best represent the special moments of a life in it's entirety provide suitable music for dying.
Matthew Chaffin 2014 spruce/quilted maple
Andy Culpepper 2015 bear claw spruce/flamed maple