Bach & Pergolesi Guest conductor Emmanuelle Haïm leads the L.A. Phil in Purcell’s Suite from “The Fairy Queen,” Bach’s Suite No. 3 in D, and Pergolesi’s “Stabat mater” with soprano Laura Claycomb. Walt Disney Concert Hall, 111 S. Grand Ave., L.A. Sun., 2 p.m. $20-$188. (323) 850-2000. Bernstein...