Gram Parsons
A friend is someone who knows every song on "Sweetheart of the Rodeo." If they know the lyrics to every song then they'll be your friend for life. If they know that Roger McGuinn and Gram Parsons had a big fight just before Columbia released the record and that McGuinn replaced at least three of the vocals Gram Parsons recorded as lead singer with his own voice then you're sure to meet one another in the afterlife.
In the afterlife you have to chose a favorite song on "Sweetheart of the Rodeo." There's no bad choice but if your friend chooses first and happens to chose "Hickory Wind" you'll have to chose a song other than the song you could listen to the rest of your life.