"The concert is completely separate from the lockout," principal hornist Jennifer Montone said. "It's just a way of continuing to do what we do, to have music be an instrument for good."

SLSO performances came to a halt after the musicians' contract expired on January 2. Musicians are calling the work stoppage a lockout; management says it's a strike. The two sides have been unable to reach an agreement on salary.

The concert, at the E. Desmond Lee Concert Hall at Webster University, will feature music by Mozart, Dvoršk, Copland, and Massenet. George Silfies, a former principal clarinetist for the SLSO, will conduct. No tickets are required. More information can be found at www.stlsymphony.org, a web site set up by the musicians.