“A 36-year-old dentally challenged cellphone salesman wins a nationally televised talent contest in Britain, and suddenly, all sorts of questions are raised about the role of classical music in our world. That is because the winner, Paul Potts, from Wales, triumphed with a rendition of ‘Nessun dorma,’ the tenor aria from Puccini’s ‘Turandot,’ at a contest with the trappings and audience — seemingly — of the mass entertainment world.”