Airs Thursday, August 20, at 1 p.m. This week from Carnegie Hall Live we join the San Francisco Symphony under the direction of Michael Tilson Thomas and guest violinist Gil Shaham for the Violin Concerto No. 2 by Prokofiev. Also on the program the New York premiere of Samuel Adams' Drift and Providence and Ravel's complete Daphnis et Chloé. John Shaefer will guest host.