Question: What 2012 American musical drama television series, produced by R. J. Cutler, has a discography where all of the actors who portray singing characters perform their own vocals?
{'answer': 'Nashville', 'supporting_facts': [['Nashville discography', 0], ['Nashville discography', 1], ['Nashville discography', 2], ['Nashville (2012 TV series)', 0], ['Nashville (2012 TV series)', 1]]}