Bars and Clubs

House of Blues. Harvard Square. 491-BLUE. Rick Russell's Blues Buffet and Jam on Thurs., March 9.

ManRay. 21 Brookline St., Central Square, Cambridge. 864-0400. Hell on Fri., March 10. Retro and New Wave Party on Sat., March 11.

The Middle East. 472 Mass Ave., Cambridge. 497-0576. Downstairs: Throat Culture on Thurs., March 9. Elevator Sextet on Fri., March 10. Upstairs: Fast Backs on Sat., March 11. Scopitones on Sun., March 12.

Regatta Bar. The Charles Hotel, One Bennett Street, Harvard Square, Cambridge. 876-7777. Betty Carter and her quintet from Wed., March 8 through Sat., March 11. The Lello Molianri Quintet on Tues., March 14.

Ryles. Inman Square, Cambridge. 876-9330. Music from 8:30 p.m. nightly.

Venus de Milo. 11 Lansdowne St., Boston. 421-9595. American Spirit, classic rock on Thurs.s.

Chocolate

Chocolate Fools Day. 661-5865. Charles Hotel, Harvard Square. Sun., March 12, 1-4 p.m. $15 at the door; $12.50 in advance. More than 20 of Boston's leading chefs and chocolatiers will offer cakes, cookies, truffles, tortes and more at the sixth anniversary of this chocolate tasting extravaganza. Proceeds benefit after-school programs of the Cambridge Performance Project.

Concert

Boston Conservatory. 8 The Fenway, Boston. 536-6430. Leonard Ciampa, pianist, will perform works by Chopin, Albeniz, Granados. Sun., March 12, 3 p.m. Free.

Women's Choir will perform works including Ave Maria by Mozart. Mon., March 13, 8 p.m. Free.

Boston Conservatory Chamber Winds and Wind Ensemble will perform works by Strauss and Milhaud. Wed., March 15, 8:30 p.m. Free.

Longy School of Music. Edward M. Pickman Concert Hall, 27 Garden St., Cambridge. 876-0956, ext. 120. Opera at Longy from Thurs., March 9 through Sat., March 11 at 8 p.m.

Longy's Benefit Concert Series on Sun., March 12 at 4 p.m. $7 for students.