This chart shows why NBC canceled its 'Hair' live TV musical after Fox's 'Rent' flopped
11:23am PST - February 5th, 2019 paul george - Business InsiderViewership for live TV musicals peaked with NBC's "The Sound of Music" in 2013, with nearly 19 million viewers. None after that have come close in ratings, and the latest, Fox's "Rent," was the lowest-rated live TV musical yet. NBC canceled what was to be its…