When Eric Church launches his Outsiders Tour this fall, he'll be bringing along hard-rock outfit Halestorm on select dates. Which, after seeing the band's riot-grrrl leader Lzzy Hale duet with the current Rolling Stone cover dude on his "That's Damn Rock & Roll," is definitely a damn good fit. Hale was mesmerizing on the tune, one of the heaviest tracks on Church's The Outsiders, trading yelps and howls with the Chief as images of Elvis Presley, Kurt Cobain and Bob Dylan flashed behind them. Playing a white Gibson Explorer (she has her own signature line), Hale broke out guitar-hero poses that would impress even Ace Frehley and left Church smiling wide. In a country show full of cross-genre collabs, this one — also our pick for Best Non-Country Song — stood out for all the right reasons.