(WILLIAMSTOWN, Mass.) – Pianist Simone Dinnerstein will perform a solo concert featuring works by Chopin, Brahms, Bach, Schubert, and Daniel Felsenfeld’s Cohen Variations at Chapin Hall on the Williams College campus on Sunday, April 15, 2012, at 3. As part of the music department’s Boesendorfer series, Dinnerstein will play a 97-key, 9-foot, six-inch long, Imperial…