Young American pianist Andrew von Oeyen will step in as the soloist this weekend with the Santa Rosa Symphony, replacing violinist Karen Gomyo in three concerts at the Green Music Center's Weill Hall.

Gomyo, who was scheduled to perform the Mendelssohn Violin Concerto, was forced to cancel her appearance due to illness.

The 32-year-old von Oeyen, who has performed with top orchestras all over the globe, will perform Mendelssohn's Piano Concerto No. 1 in G Minor.

A graduate of Columbia University and The Juilliard School, the pianist currently lives in New York and Paris. This is the first time he will perform with the Santa Rosa Symphony.

The rest of the program, led by guest conductor Carl St. Clair of the Pacific Symphony in Orange County, remains the same and includes Beethoven's Overture to "Egmont," Hector Berlioz's "Roman Carnival Overture" and Ottorino Respighi's "The Pines of Rome."

The concerts will be held at 8 p.m. Saturday and Monday and 3 p.m. Sunday at Weill Hall on the Sonoma State University campus, Petaluma Hill Road and Rohnert Park Expressway. For tickets, call 546-8742 or go to $20-$75. Pre-concert talks with St. Clair start one hour before each performance.