Love rock and roll? Want to sing some of the greatest hits of all time? Join the Boomers Chorus, a program geared for people ages 55 and above who love to sing. There’s no experience required and sessions culminate in a performance. Rehearsals are on Tuesdays between Sept. 10 and Nov. 5 from 6:45 to 8:30 p.m. There is no rehearsal on Oct. 8. The performance is Nov.12, 6:45 p.m. $100 to participate. For more information, call 202-633-3030 or visit smithsonianassociates.org.