 CONT: When Sonny first sees the auditorium that eventually becomes  Xanadu, the letters on the roof of the building that spell out  auditorium are missing the A and R. Later when Kira takes him to the  auditorium, the T is now missing. The following scene when Sonny and  Danny arrive at the auditorium, the T is back. Finally, when Sonny  and Kira are slow dancing in front of the auditorium before it  magically transforms into the finished Xanadu exterior, the T is  missing again.