The oldest and most rooted, in Del Oro tradition, is the "band program," currently directed by Ben Duncan.

The band program holds the Del Oro Golden Eagle Spectacular (an annual marching band competition for schools in Northern California and sometimes neighboring states) and more recently hosts the Del Oro Golden Eagle Winter Spectacular (an annual competition for winter percussion and winter guard ensembles).

Del Oro has two choral ensembles: Chorus, which is offered in the Fall Semester, and is open to all students.

The theater department's debut production was the American classic "You Can't Take it With You," written by George S. Kaufman and Moss Hart and directed by Jeffrey Johnson, co-founder of Del Oro's theatrical program.

It opened in late-2004, prior to the completion of the new theater facility, and was performed on the campus cafeteria stage.