Gilbert Varga, music director of the Euskadi Symphony Orchestra, will replace Sawallisch in concerts on October 14-18; the concerts will mark the rising conductor's Philadelphia Orchestra debut.

The program includes the Bart‹k Viola Concerto, with Roberto D‹az as soloist, as previously scheduled, but Mendelssohn's Overture to A Midsummer Night's Dream, Ravel's Mother Goose Suite, and Bart‹k's Miraculous Mandarin Suite have replaced Mendelssohn's Symphony No. 1 and excerpts from Beethoven's The Creature of Prometheus.

James Conlon, the newly appointed music director of the Ravinia Festival and music director designate of Los Angeles Opera, will fill in October 21-25. Alban Gerhardt performs Dvoršk's Cello Concerto as scheduled; Zemlinsky's The Mermaid replaces Mozart's Overture to The Impresario and Hindemith's Symphony in E-flat major.