Yeah, the question of foundational v. definitive. I guess I'm going to go for whatever best suits both categories. And though I've tried to be objective, there's no denying that my heavy prejudices are on display (no Zeppelin, 'cause I class them as rock, without the roll). Here's the updated list--covering twenty years, from 1954-1974. After that, I don't feel confident that I'm picking the best ones. So, narrowing the question a little, any changes that yall would suggest for this time period?
And since I can't really say anything on the subject, what about from 1974-1994?
(my updated list):
[1954] Elvis Presley - the Sun Sessions
[1959] Buddy Holly - greatest hits
[1964] the Beatles - Help!
[1964] Bob Dylan - Highway 61 Revisited
[1966] the Beach Boys - Pet Sounds
[1969] Creedence Clearwater Revival - Willy and the Poor Boys
[1969] the Rolling Stones - Let It Bleed
[1970] Simon and Garfunkel - Bridge Over Troubled Water
[1972] David Bowie - The Rise and Fall of Ziggy Stardust and the Spiders From Mars
[1974] Crosby Stills Nash and Young - So Far