 The original CBS broadcast presentation of this production featured more  narration than the later television broadcasts of it. In the original 1977  version, as the mice appear in their tuxedos, the narrator explains that, in  Claras imagination, they represent the adults at the Christmas party, and in  Act II, just before the series of dances at the Kingdom of Sweets, the  narrator mentions that Clara "must touch each couple to bring them to life".  In the PBS version, all mention of the mice representing the adults was  removed, but the narrator still commented that Clara had to bring the couples  to life. On the current DVD, and on all PBS telecasts now, all narration  stops after the opening scene. The narration was removed without having to  cut any of the music or the dancing; both have always remained intact in all  of the versions of this "Nutcracker".