Counting down to the Met’s premiere of Doctor Atomic. Nobody has made more noise for classical music than Daniel Barenboim, the pianist, conductor, proselytizer, knight errant, and tireless musical arguer. Marin Alsop wishes Bernstein a happy 90th birthday. Television composer Doug Cuomo writes his long-awaited opera. Alisa Weilerstein’s parents didn’t teach her the cello to complete their string trio. But it did work out that way. The anti-genre string quartet is back from a year on the road, having picked up a load of new friends and new ideas. Must-see performances this fall and winter. Choreographer Benjamin Millepied explores a deep-rooted connection to Chopin in his upcoming ensemble. In a fall of absences, these classical venues will remain closed.