Jem Aswad Senior Music Editor“The only way that this could be more elegant,” said Father John Misty as he surveyed the crowd in New York’s legendary Rainbow Room, a venue that epitomizes elegance, “is if we had three tables heaped with shrimp cocktails.”He wasn’t wrong. The opulent venue, opened in 1934 and located on the 65th floor of 30 Rock, has multiple chandeliers, a sunken, circular dancefloor and a 15 or so floor-to-ceiling windows offering breathtaking views of Midtown Manhattan and beyond, with the Empire State Building’s nightly light show occasionally distracting from the performance onstage.