Answer:
Throughout the late 1940's and 1950's, MGM became the king of the movie musical. And this was largely due to the "Freed Unit." Freed's productions became so popular that the studio could afford to have a SECOND unit for musicals under the direction of Joe Pasternak.
B. B major
I am thinking it's either B major or a B flat minor I don't think it's a B falt major cause I don't think that even exists
Currier and Ivy are reprinted on many Christmas cards.