Nanci Griffith — "I Wish It Would Rain" (Live, 1988)

I like this performance, although you can hear the harmony better on the studio version.

Glen Hansard and Marketa Irglova — "Falling Slowly"

The Club Blue pick from 6/21/07.

Priscilla Ahn — "Dream"

Kiri te Kanawa — "O Mio Babbino Caro"

The Club Blue pick from 6/14/07. More on this Puccini at the original post.

Ten Years After — "I'm Going Home" (Live, Woodstock '69)

U2 — "Beautiful Day"

I've featured this one before (and it's a gas to play), but Roy's most excellent post provides the spur:

WHEN LIFE GIVES YOU LEMONS, MAKE VENOMADE. Let's see how they're reacting to Obama's speech at National Review's The Corner. First up: Greg Pollowitz.

U2's "Beautiful Day"... is playing at the Barack Obama rally. No Americans write music Obama likes?

Ooooh, the pickings are gonna be mighty slim. K-Lo:

John McCain seriously needs some of these screaming girls behind him.

Good luck with all that. The rest of Roy's post is great, too (natch), but boy, I'm looking forward to kicking these folks' asses in November. Ain't no time like the present to get started!

Fredo Viola — "The Sad Song"

The Club Blue pick from 5/31/07.

Janis Joplin — "Piece of My Heart" (Live)

In Stockholm, 1969. The video's murky, but this has by far the best sound quality of all the live versions I've found. Goddam, I love her singing this song.

Godspeed You Black Emperor — "The Dead Flag Blues"

A fan video for the track. Some of their music appears in the film 28 Days Later. Not for all tastes, but it's striking and memorable, and they have a devoted following. Here's their Wiki entry.

Nellie McKay — "The Dog Song"

The Club Blue pick from 5/17/07.