Guest conductor Nicholas McGegan will lead the Los Angeles Chamber Orchestra in performances on Oct. 26-27. (photo by Randy Beach)

The Los Angeles Chamber Orchestra celebrates the return of guest conductor Nicholas McGegan and pianist Jeremy Denk in a program featuring Mozart’s Piano Concerto No. 19 on Saturday, Oct. 26, at 8 p.m., at the Alex Theatre, and Sunday, Oct. 27, at 7 p.m., in UCLA’s Royce Hall.

McGegan, who last appeared with LACO in 1989, also conducts Schubert’s Symphony No. 6 in C Major, as well as the overture from his opera, “Der Häusliche Krieg” and music from Rameau’s opera, “Dardanus.”

Denk, who last performed with LACO in 2014, has a reputation as an unusual and compelling artist with a broad and thought-provoking repertoire.

A free “Concert Preludes” pre-concert discussion will be held one hour before curtain time. Tickets start at $28. The Alex Theatre is located at 216 N. Brand Blvd., Glendale. UCLA’s Royce Hall is located at 10745 Dickson Court. For information, call (213)622 7001 ext. 1, or visit laco.org.