Vinyl Advocacy.
Gentle Giant fans. People who read Trout Fishing in America way back when. 'Early' Hal Hartley fans. Philosophy majors. Math teachers. People who read liner notes, and are geeked-out enough to tell you who played banjo on Nashville Skyline, or who is credited with "lights and illumination" on King Crimson's Islands.
Should be analog
Rust Never Sleeps. The Last Waltz. American Hardcore. A Hard Days Night. New York Doll. The Velvet Goldmine . The Kids Are Alright.
Ken Burns doesn't need any more kudos, but Jazz was relatively awesome.
The obvious answer is High Fidelity, which I haven't read, but Hornby wrote a great set of essays about songs called... Songbook. Is Steve Simmels still around?
Discwasher