Wanda Jackson + Imelda May

Wanda Jackson, America's long-reigning Queen of Rock, is having a banner year thanks to The Party Ain't Over, her rollicking new Jack White–produced LP. (A song from the record even appears at the end of Bridesmaids!) The Oklahoma legend—and Elvis's ex!—headlines SummerStage, with young rockabilly comer Imelda May opening.