I heard the song 'History of Lovers' by Calexico and Iron and Wine on eitherLeft of CenterorDisorderand immediately dug it. I'm really intoIron and Wineand I have some Calexico, so I figured I'd give it a listen. (on Sirius, you see the name of the artist(s) and the song title when the song is playing).
About half way through it, I 'tagged' it in my radio. On Sirius, you get a selected number of 'tags' whereby when ever that song pops up anywhere on the Sirius network, the radio alerts you and you can go have a listen. It's a terrific feature that I've chocked full of Wilco, Sufjan Stevens, The Staples Singers, and a few others. This allows you to not miss any of your 'favorite' songs.
After a few times of hearing it in the car, I grabbed 'History of Lovers' in the itunes music store. I've been listening to the entire collaboration ever since. "History" really sticks out for me, so I dug a bit more. I foundthis video of the 2 acts performing for Craig Fergusenon the Late Late Show. The performance is arranged a bit quicker than the record version.