Ryan Adams "Gimme Something Good" (live on 'Letterman')

Ryan Adams 'Gimme Something Good' (live on 'Letterman')
Rocking his signature Canadian tuxedo and some serious bedhead, Ryan Adams took over the stage at The Late Show with David Letterman last night (September 11).

The alt-country poster boy showed off his more rock'n'roll side with his latest single "Gimme Something Good." The tune appears on his just-released self-titled album and Letterman thought it was so good that he asked Adams to give the audience a little bit more. Adams obliged, launching into the song for a second time as the credits began to roll.

Ryan Adams is out now via Pax Am and he'll be making a few Canadian stops on his upcoming tour, which you can read about here. In the meantime, you can watch his late-night performance below.