The tour of Graceland was done via audio tape, played in compact tape "walkmans" which we wore around our necks with a strap. The tape was very well-done, and well-timed to the pace of our tour. The tape would prompt us to stop it whenever we arrived at a place requiring more time. The narration was interspersed with Elvis music and commentary from Priscilla Presley. (Of course, most of the history is "sugar-coated".)