THEATER NOTES : Sharing a Stage : The Cabrillo Music Theater will perform a show in Port Hueneme to make room for the Santa Barbara Civic Light Opera.

Even though they bill themselves as “the resident music theater company of the Oxnard Civic Auditorium,” the Cabrillo Music Theater company will be performing one of this season’s four productions at the Dorill P. Wright Cultural Center in Port Hueneme.

Why? Cabrillo Board Chairwoman Sally Voorhees explained that her group, which has been performing at the Oxnard Civic for 25 years, has been preempted by the Santa Barbara Civic Light Opera.

That company--under its local subsidiary the Music Theater of Ventura County--brought a production of “Evita” to the Civic last season.

They are setting up a more ambitious schedule for 1991, tentatively beginning this July.

“They were quicker than we were and barked louder than we did,” Voorhees said. “So we had to schedule our summer production, ‘Grease,’ for the Wright Center.”

Director Sean Moran, who did five shows for the Santa Barbara group before defecting to Cabrillo for last year’s excellent “West Side Story,” puts it more bluntly. “Santa Barbara wasn’t making enough money in Santa Barbara, so they’re coming down here.

What I can’t understand is the Oxnard Civic people coming down on the side of their company.”

Moran directs the Cabrillo production of “The Sound of Music,” which opens Friday night at Oxnard Civic. He promises a show that incorporates many of the changes that occurred between the 1959 Broadway production and the film version; adding some songs and cutting others, incorporating a large wedding scene and providing a more upbeat ending.

“It was the biggest film of 1965,” explains the flamboyant director, “and most people don’t know the play.”

The 500-seat Port Hueneme facility is newer than the 1,604-seat Oxnard Civic: “Grease” will feature an ensemble of 17 and a small band; the Cabrillo production of “The Sound of Music” has a cast of 60 players plus an orchestra.

“Grease” will play June 21 to 23 and 28 to 30 at the Wright Center, and the Cabrillo troupe returns to the Oxnard Civic for “Fiddler on the Roof” Sept. 6 to 8 and 13 to 15 and “The King and I” in Nov. 15 to 17 and 22 to 24.

Lane Davies, artistic director of the Santa Susana Repertory Company, will hold an afternoon workshop, “Working in Film and Television,” at 1 p.m. April 20 at the Moorpark College Forum Theater. Davies--a veteran of the soap opera “Santa Barbara,” where he played family black sheep Mason--has been working on the pilot for a prime-time series.

Called “Good and Evil,” it stars Teri Garr and Margaret Witton as sisters.

Davies plays the love interest of “evil” sister Garr in the Witt/Thomas/Harris production.

Promised speakers at the workshop include casting people Kathleen Lettrie (“The Young Riders”) and Grady Roberts (“Night Court”) and personal agent Martin Lesak, with an opportunity for one-on-one questions.

Admission is $25 and space is limited; call (805) 582-9000 for reservations.