When Heart took the stage at the Kennedy Center Honors to pay tribute to Led Zeppelin, no one expected the emotional earthquake that followed. Ann and Nancy Wilson, backed by a choir and full orchestra, delivered a spellbinding rendition of "Stairway to Heaven" so powerful it moved Robert Plant, Jimmy Page, and John Paul Jones to tears. The performance—complete with soaring vocals, thunderous drums, and a gospel choir climax—was so transcendent that the camera caught Plant mouthing "Wow" in awe.