Westport Arts Center's final two Jazz Jams of the 2011-12 season will take place from 7 to 9 p.m. this Thursday, May 17, and again on May 31, in the WAC Gallery, 51 Riverside Ave.

The sessions, under direction of artistic director for jazz Brian Torff, are intended for musicians to take part in a spontaneous exploration of jazz, blues and other music styles. Among the instruments used during the series, begun in January 2011, are saxophone, clarinet, trumpet, electric violin, electric guitar, keyboard, drums and voice.

Sessions for the 2012-13 season are slated for Thursdays, Sept. 20, Oct. 18, Dec. 13, Jan. 10, Feb. 21, March 14, April 18 and May 9.

Tickets are $15, $10 for WAC members and students, free for musicians who play.

For information and tickets, contact the center at 203-222-7070 or visit www.westportartscenter.org.