Willie Nelson covers eclectic mix of artists on his new studio album _ Moment of Forever_, including Gravedigger by fellow Farm Aid board member Dave Matthews. So it makes sense that Nelson opened for Dave Matthews Band a handful of times this summer, including shows at Louisville, KYs Louisville Slugger Field and Memphis, TNs AutoZone Park this weekend. On both nights, Nelson also took the stage with Dave Matthews Band to play Gravedigger in front of an arena-sized audience. These performances marked the first time Nelson has played with Dave Matthews Band, though the musicians have appeared on the same bill at a variety of festivals and charity events. Dave Matthews Band also busted out a cover of Talking Heads Burning Down the House for the first time in Louisville. The group will appear at Cincinnati, OHs Riverbend Music Center on August 5.