6. John Legend With Jennifer Nettles and Hunter Hayes
CMT Music Awards, June 4th
The R&B smoothie and the Sugarland singer met at President Obama's inauguration in 2009 and became fast friends as competitors on the 2012 ABC singing show Duets. Their mutual affection was palpable in this performance of "All of Me," as the pair played a charged acoustic take of Legend's sensual celebration of a flaws-and-all kind of love. Nettles and Legend offered up their hand-in-glove harmonies and Hayes, who composed a guitar arrangement especially for the show, rounded out the performance with his deft picking.