The country sextet Zac Brown Band – 2010 Best New Artist Grammy winners – performed last night on Jimmy Kimmel's concert series, playing "Knee Deep" for a crowd of happy, hand-waving fans. "Knee Deep" is from the band's second studio album, the critically acclaimed You Get What You Give, which debuted at Number One on the Billboard 200. The album remains at Number Six on Billboard's Country Music chart as the band kicks off its summer tour.