April has been an exhausting month for classical music listeners. Still, when that means staying out late to hear Evgeny Kissin play eight encores, you will not hear me complaining. Put your shoes back on, because there is more music to be heard. We start with the best events this week. >> By all accounts, Chinese-American pianist Chu-Fang Huang, winner of the 2005 Cleveland Piano Competition, is an exceptional talent at age 23. She is…