The Santa Monica High School Orchestra will perform its third annual “The Beatles at Barnum” concert 7:30 p.m. Friday in the school’s Barnum Hall.

Humorist and noted Beatles historian Marvin Lewis will host the event, which features full orchestral arrangements of Beatles songs, audience sing-alongs and other performances.

General admission tickets are $20 — $10 for students. All proceeds will benefit the Samohi Orchestra Program. Audience members are encouraged to dress up as their favorite Beatle or rock ‘n’ roller.

For more information about the event and to buy tickets, visit samohiorchestras.org.