3:30pm / Pop Music

It all started with a series of free Sunday concerts in the parking lot of the International Surf Museum. But when the museum staffers didn’t have any artists for the 28th, they decided to open it up as a jam session for musicians from surf bands. Well, it grew, and grew, and then next thing they knew they had the Ultimate Surfin’ Sunday Rendezvous Ballroom Reunion on their hands. The parking lot was too small, so they moved over to the Newport Beach Hard Rock Cafe, where Dick Dale, the Surfaris and members of the Chantays, the Bel Airs and other groups will play the unique blend of rhythm and blues, jazz, flamenco and country that melded into surf music in the 1950s and 1960s. If you can’t get into the show, you can always visit the museum, which has a new exhibition on surf music on display through July.

* Ultimate Surfin’ Sunday Rendezvous Ballroom Reunion at the Hard Rock Cafe, in Newport Fashion Island, 451 Newport Center Drive, Newport Beach. 3:30-7:30 p.m. $30. Sold out. International Surfing Museum, 411 Olive Ave., Huntington Beach. (714) 960-3483.

2pm: Theater

John Astin, the veteran stage and screen actor best known as the original Gomez on TV’s “Addams Family,” will join with sons Sean and Mackenzie, also acting pros, and writer-actor Paul Day Clemens in a dramatic reading of “Just Let Me Say This About That,” a new narrative poem by John Bricuth about the ultimate press conference for the end of the 20th century.

* “Just Let Me Say This About That,” UCLA Faculty Center, UCLA campus, West Los Angeles, 2 p.m., $10. (Parking in Lot 2, $5). (310) 206-0961.

3pm: Music

Alexander Ruggieri, music director of the Cambridge Singers, conducts the ensemble, with its adjunct Little Symphony of Pasadena, in Mozart’s Requiem on a program with Haydn’s C-major Organ Concerto and Bach’s Cantata 51, “Jauchzet Gott.” Among the soloists are soprano Lori Stinson and organist Edward Murray.

* Cambridge Singers appear at Pasadena Presbyterian Church, 585 E. Colorado Blvd., Pasadena, at 3 p.m. $14-$19. (626) 584-0088.

7pm: Humor

Roy Zimmerman has been called a latter-day Tom Lehrer, but he claims his influences are wider, encompassing everyone from Leonard Bernstein to Lenny Bruce. The singer-satirist brings his socially conscious comedy--including the songs “SWMVGL35+” and “T.M.I. (Too Much Information)”--to the “Sundays at Seven” series at the Beverly Hills Library.

* Roy Zimmerman at the Beverly Hills Library, second floor community room, 444 N. Rexford Drive. 7 p.m. $15. (310) 471-3979.

8:30pm / Performance Art

Noted New York-based performance artist Charles Dennis, the co-founder of Performance Space 122, will perform his new work, “Me & My Dad & TV,” a multimedia piece about becoming an artist and healing a difficult father-son relationship. The autobiographical story, told through live and video narrative, dance and music, spans the late ‘40s to the present and includes Dennis’ father on video offering commentary on his son’s performance art career.

* “Me & My Dad & TV,” Highways, 1651 18th St., Santa Monica, 8:30 p.m. $15. (310) 315-1459.

1:30pm / Jazz

Sponsored by the Thelonious Monk Institute of Jazz, a program of music titled “History of Jazz Informance” explores the influence of Latin rhythms, music and musicians on America’s great improvisational tradition. Participants, including trumpeter Bobby Rodriguez, saxophonist Justo Almario and percussionist Alex Acuna, will explain and perform examples of salsa, cha-cha, bolero and other rhythmic forms. Take the kids and they’ll learn how to count in 6/8 time!

* “History of Jazz Informance,” Grand Hall of the Music Center, 135 N. Grand Ave. Free. (310) 656-4500.

Freebies:

The YMF Debut Orchestra plays a Romantic program--the “Bartered Bride” Overture by Smetana, the Grieg Piano Concerto and Brahms’ Fourth Symphony--in the Wilshire-Ebell Theatre, 4401 W. 8th St., L.A. 4 p.m. (310) 859-7668.

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The Santa Monica Symphony plays Shostakovich’s Tenth Symphony at Santa Monica Civic Auditorium, Main Street and Pico Boulevard, Santa Monica. 7:30 p.m. (310) 996-3260.