If you watch the Netflix show 'Russian Doll,' you hear the bouncy first notes of a song over and over again. What is it? Also in the news today: the Grammys will salute Dolly Parton, 'Hair' gets yanked as NBC's next live musical, Eddie Money wins a court ruling over his former drummer, UK music retailer HMV is saved, and two surprising facts about the history of pop hits.