i'm trying hard not to say something like "I think keats would like..." i'm not sure if its condescending or just silly, but it is tempting to say that he'd like the same things I like and for the same reasons.
I will say that I'd like to think of myself as pensive young person in a way similar to Keats, and I love the blues, from the old greats to the blues rock artists like allman brothers and the like. I think modern "bluesy" music has taken the form of indie and emo bands like modest mouse and radiohead and death cab for cutie and nick drake (i think he was mentioned before). Of course the older classic rock (by the way, has "classic rock" come to refer to ACDC, while The Band and Bob Dylan and The Doors are now considered "oldies?") generation loved the romantics and transcendentalists.
Modest Mouse and Death Cab for Cutie are my two favorite modern rock bands, and I think they share with Keats the paradoxical torment and appreciation of melancholy.
As far as art is concerned, I appreciate the same things in the impressionists as i do in Keats. I made a bitmap a few years ago with Van Gogh's self portrait and on either side of the image i created a margin. One margin had the last lines of "Ode on Melancholy" beginning with "Ay, in the very temple of Delight..."
and on the other margin I included an exerpt from John Fletcher:
"There's naught in the this life sweet,
If man were wise to see 't
But only Melancholy,
O sweetest Melancholy!"
Billie Holiday is another biggie, those first few notes of "I'll Look Around" go great with keats for me. my favorite lines are from "It Had to Be You" (i think billie holiday was the first to do this song, but its hard to say when its become such a standard)
"...And even be glad,
just to be sad
thinking of you"
I love Van Morrison for the same reasons as well.
This is a bit off topic, but speaking of romantic lit, has anyone seen the newest film version of Pride and Prejudice with Keira Knightly? better than the book, and Dario Marianelli's score is amazing in its own right.
I'm not sure anyone could say with a straight face what Keats would have liked, but it's interesting to see what we (who like his poetry) like in music.