Princeton University Orchestra’s first concerts of the season are October 20 at 7:30 p.m. and October 21 at 3 p.m. in Richardson Auditorium on the campus. Ruth Ochs conducts the program, which features concerto competition winner Henry Peters ’20 on marimba.

On Tuesday, October 23 at 7:30 p.m., the orchestra presents the Orchestra of the Accademia Teatro Alla Scala on their United States tour, also at Richardson. Ivan Fisher, internationally known conductor, leads the orchestra.

The October 20 and 21 concerts pay tribute to Leonard Bernstein’s centennial with the Fancy Free ballet suite. The program also includes Hector Berlioz’s Symphony Fantastique and contemporary French composer Emanual Sejourne’s Concerto for Marimba and Strings.

Soloist Peters, a junior in the computer science department, said, “I’m thrilled to be able to play a concerto with the full orchestra. Many people have never heard a marimba concerto before, and I’m excited to be able to show this great piece to so many people.”

Tickets are $15 ($5 for students). Visit music.princeton.edu or call (609) 258-9220.

The program for the Orchestra of the Accademia Teatro Alla Scala is Rossini’s overture to La gazza ladra, Mendelssohn’s fourth symphony and Tchaikovsky’s fifth symphony. The touring orchestra has performed at theaters and festivals across the globe, led by such conductors as Zubin Mehta, Yuri Temirkanov, Fabio Luisi, and Gustavo Dudamel.

This concert is free, but tickets are required. Visit music.princeton.edu or call (609) 258-9220.