Philadelphia Chamber Music Society: 2 tickets. You can't buy culture and class. Or can you? Win two tickets to one of the following Philadelphia Chamber Music conerts: Miriam Fried Violin, Jonathan Biss Piano: Sunday, April 14, 2013, 8 p.m. at the Perelman Theater, Kimmel Center; Ida Levin Violin, Hsin-Yun Huang Viola, Peter Stumpf Cello, Cynthia Raim, Piano: Sunday, April 28, 2013, 3 p.m. at Independence Seaport Museum/Penn's Landing at Walnut Street; Jonathan Beyer, Baritone, Spencer Myer, Piano: Friday, May 3, 2013, 8 p.m. at American Philosophical Society. To learn more, visit www.pcmsconcerts.org