FILE - Nancy and Ann Wilson of the classic rock band Heart perform in concert at the American Music Theater on Monday, March 24, 2014, in Lancaster, Pa. 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 Owen Sweeney/Invision/AP, File)