Darius Rucker With Karen Fairchild 

With a setlist of sing-along radio hits, Darius Rucker was revitalizing a, by now, festival-wearied crowd at the stadium when he offered them a special pick-me-up: a cameo by Little Big Town's Karen Fairchild, who joined Rucker onstage for his single "If I Told You." The pair's voices entwined beautifully in the chorus, and their chemistry, facing each other and drawing closer step by tortured step, accentuated the song's desperate plea. Rucker's solo version is marvelous, but the duet had us wondering if he should consider a collaboration with the LBT singer in the future.

 

You can see the rest of the list here.