FILE - Nancy Wilson, left, and Ann Wilson of Heart perform on opening night of the Heartbreaker Tour at the Cruzan Amphitheater in West Palm Beach, Fla., June 17, 2013. Heart ? the pioneering band that melds Nancy Wilson?s shredding guitar with her sister Ann?s powerhouse vocals ? is hitting the road this spring for a world tour that Nancy Wilson describes as ?the full-on rocker size.? (Photo by Jeff Daly/Invision/AP, File)