Dirk Nowitzki goes to work with tambourine

Dirk Nowitzki is not quite as busy as he was a year ago. While he'd rather be playing in the Western Conference finals again, Nowitzki seems to be enjoying his free time.

Dirk tweeted over the weekend about how much he enjoyed attending the Avett Brothers concert. He didn't mention that he was part of the show at the Verizon Theatre in Grand Prairie.

After being invited on stage while the Avett Brothers played "I Killed Sally's Lover," Dirk grabbed a tambourine and went to foot-stomping work. See for yourself in the above video, which has gone viral. The Dirk dancing starts at about the two-minute mark.