The PCHA music question at hand: You can only listen to music from one artist for the rest of your life, but it can only be music that hasn’t been released yet. Anything this artist will appear on in the future counts, though — guest appearances, new bands in which they start, etc. Nothing from the back catalog is allowed.
So a few thoughts before we get into it:
1) You want someone you have faith will be around for a good long while, so artists of a certain age and bands who could conceivably break up soon are bad ideas.
2) Solo artists are safer than bands, because again — bands break up. You don’t want to bet your remaining life’s entertainment on Japandroids, only to see them split before ever releasing another album.
3) Prolific is ideal. Life is gonna get pretty boring with only one artist to listen to, so the more new music, the better. Ryan Adams>Stone Roses, in other words.
4) Diverse and eclectic get bonus points. I’d rather hear new sounds every couple years than the same old thing (however good) repeated album after album. Let’s call this the Ramones Corollary.