And now the polka, you worms. Hitchcock makes a musical! ...kinda. It's an operetta, which were very much in fashion at the time; a little music, a little dancing, and a love story at the center. This one centers around a highly-fictionalized version of how "The Blue Danube" was written in 19th-century Vienna. So, can Hitchcock do song and dance? We watch and find out!