There are too many songs, or maybe just too much time in one's life to have songs able to encapsulate all of it. When i first read the title i though maybe you meant literally having a soundtrack that you listen to while you live - complete with tempo and song changes as your mood changes and events occur around you ... that would be awesome.. lol
but if i must pick a couple of songs for the moment..
rolling stones - paint it black
Requiem for a Dream
Samual Barber's Adagio for Strings
and various 2pac, which i have too many to be specific about.
odd list.. but um.. yah, odd question to begin with