Entertainment Weekly: With gray hair, a flowing dress, and a British accent, Lady Gaga sang a medley of songs from The Sound of Music in honor of the film’s 50th anniversary. Scarlett Johansson introduced Gaga, noting “there was no solution to Maria but to love her.� After entering a stage adorned with trees, Gaga began by belting “The Sound of Music,� and then segued, with some skirt swishing, into “My Favorite Things.� The medley concluded with “Ed