“The scene: a crowded pub in the London district of Islington. Waitresses nudge through the crowd of about 100 people, carrying trays of hamburgers and cheesy fries, as patrons – East End hipsters, young professionals, students – saunter up to the bar to get more libations. Then one of the evening’s hosts asks for attention and introduces the live entertainment: a violinist, a violist and a cellist.”