Over 18 million people tuned in to NBC for the initial live broadcast, making it the network's most watched Thursday night program since the ER finale in 2009.
Audra McDonald, who played Mother Abbess, as of 2014 holds the all-time record for the most number of competitive Tony Awards ever won by a performer: six. (While Jule Harris also had six Tonys, one of hers was honorary.) She is also the first performer to win Tonys in all four possible performance categories (best actress in a musical, best actress in a play, best supporting actress in a musical, and best supporting actress in a play).
Christian Borle was terrified that he was accidentally going to break his teacup during the live broadcast.
Carrie Underwood was off-book by the time the final cast had gathered for the first table read. On set, she worked with an acting coach.
The city of Salzburg (the setting of the play and the hometown of the von Trapps) is never once mentioned.