In case you missed it, Steve Earle and the Dukes appeared on Letterman last night. The Mastersons, the husband and wife duo Chris and Eleanor Masterson, are a duke and duchess in Steve Earle's band. They joined Earle on stage last night for a fantastic show.

Steve Earle's new album Terraplane dropped last week, and you can download it off iTunes here. The Mastersons also have a new project out called Good Luck Charm, which you can find and download here. 

And so you don't miss it, JD McPherson will be the musical guest on Letterman tonight.