ENTERTAINMENT EVENTS : How to get a Halloween treat without wearing a silly costume.

For people who want to leave Halloween to the youngsters--or at least to the younger at heart--there are plenty of auditory and visual treats featured in the South Bay this weekend.

Grammy Award-winning singer Helen Reddy will perform with the Carson-Dominguez Hills Symphony Orchestra at 8 p.m. today in the Carson Community Center.

Benefiting the Carson Symphony Assn., the concert will feature Reddy singing such pop hits as “Angie Baby,” “Delta Dawn,” “You and Me Against the World” and her Grammy Award-winning “I Am Woman.”

The orchestra, under the direction of Frances Steiner, will also perform alone. Its program will include Mussorgsky’s “Night on Bald Mountain” and Liszt’s “Mephisto Waltz.”

The concert will be preceded by a no-host cocktail hour at 6 p.m. and a 7 p.m. dinner.

Donations for the dinner and VIP reserved seats are $50 per person. Donations for the concert alone are $25. Information: (310) 835-0212, Ext. 238.

In contrast with Reddy’s pop-oriented concert, another event will showcase a choir whose sounds date to the Renaissance.

Loyola Marymount University will present 12 Los Angeles-area choral soloists who have formed an autonomous choral ensemble, “Zephyr: Fresh Voices From the West.” Its premiere concert will be in Murphy Hall of the Fritz B. Burns Fine Arts Center at the university.

The ensemble includes performers who sing with the Los Angeles Master Chorale, the Music Center Opera and many churches.

The concert will include music from composers Gesualdo, Brahms, Berlioz and Schubert.

In keeping with the spirit of the holiday, today’s show will begin at 8:13 p.m. The audience is invited to attend in a costume. Tickets are $10 each and are available from the Loyola Marymount University central ticket agency at (310) 338-7588.

At El Camino College, Tony-Award winners Carol Channing and Rita Moreno will be holding court.

The duo will perform their favorite stage and nightclub acts in “Two Ladies of Broadway” at 8 p.m. today at Marsee Auditorium in Torrance.

Tickets for the “Two Ladies of Broadway” are $25, $22 and $18. Information or credit card orders: (800) 832-ARTS or (310) 329-5345.

Tonight will also feature a Concert Dance Ensemble at El Camino in a continuation of its Resident Artists Series. The dance ensemble will be in the Campus Theatre in Torrance, at Crenshaw and Redondo Beach boulevards. It begins at 8 p.m.

The program features dances evoking the Spain of 1492 and pays tribute to the 500th anniversary of Columbus’ voyage. It depicts images inspired by music of Columbus’ time, showing aspects of North African, Arabic and Jewish experiences in 15th-Century Spain.

There will be a second performance at 8 p.m. Saturday.

Tickets for the Dance Ensemble are available at the door or box office for $5 and $4. Information regarding the El Camino events or telephone orders: (800) 832-ARTS or (310) 329-5345.