YOUNG VOICES The Young People’s Chorus of NYC holds a fundraising concert for itself to mark its 10th anniversary as an independent chorus. Special guests include the schools chancellor, Joel Klein, and an actor on “Sesame Street,” Bob McGrath. Tonight, 6 p.m., Sony Atrium, 550 Madison Ave., between 55th and 56th streets, 212-289-7779, ext. 14, $75 and up.

FOLKY NOTES A sometime collaborator with guitarist Marc Ribot, Shahzad Ismaily performs with Garrett Devoe in the band Pure Horsehair. The duo performs a “hodge podge” of folk and soul. Tonight, 11:30 p.m., Joe’s Pub, 425 Lafayette St., between 4th Street and Astor Place, 212-967-7555, $8.

YOU SAY CANTATA The Orpheus Chamber Orchestra performs the Bach cantatas No. 133, “Ich freue mich in dir;” and No. 40, “Dazu ist erschienen der Sohn Gottes.” Tonight, 6:30 and 8:30 p.m., Metropolitan Museum of Art, Medieval Sculpture Hall, 1000 Fifth Ave. at 82nd Street, 212-570-3949, $60.

THE BRIDGE IS OVER A pioneering rap artist and founder of the Bronx hip-hop collective Boogie Down Productions, KRS-One performs selections from his raucous, consciousness-raising catalog. A screening of Florian Gaag’s “Wholetrain,” about a graffiti underworld, is also featured. Tonight,10 p.m., S.O.B.s, 204 Varick St. at W. Houston Street, 212-243-4940, $20-22.

SOULFUL SURFER A former pro surfer and close collaborator with singer Jack Johnson, Donavon Frankenreiter performs laid-back tunes from his sophomore album “Move by Yourself.” A regular on the antifolk scene, singer Dan McCloskey is a featured performer. Tomorrow, 7:30 p.m., Warsaw, 261 Driggs Ave. at Eckford Street, Williamsburg, Brooklyn, 718-387-0505, $15.

IRISH TROUBADOUR A singer and songwriter, Damien Rice, gives a concert featuring selections from “9,” his second album of raw folk-pop. Tomorrow and Wednesday, 8 p.m., Beacon Theatre, 2124 Broadway at 74th Street, 212-496-7070, $41.50-$45.