From a Fullerton College website:
Rock music became so popular during this era that the FJC Hornet would interview musicians, list clubs where certain groups were playing, and announce new albums that were being released. Because rock music was banned on campus, a popular activity was attending concerts at local venues, including Melodyland, the Glendale Ice House, and the Paradox Club (225 South Tustin) in Orange.[originallu on El Camino Real in Tustin) In the May 19, 1963 issue of the Hornet, an advertisement announced the opening of the Rhythm Room (218 West Commonwealth), “Fullerton’s own young adult night club.” Open Fridays and Saturdays from 7:00 p.m. to 2:00 a.m. (admission was $1.50), high school and college students would rock out to various bands. Purchased by Eddie Davis and Ed Cardenas, who hoped to develop a Chicano or Mexican American sound similar to Motown, the Rhythm Room was also a rehearsal spot and recording studio. In the Spring of 1965, Cannibal and the Headhunters recorded their classic “Land of a Thousand Dances” at the Rhythm Room, which is now the location of the Fullerton Civic Light Opera (pictured in the photo). FJC students also began seeking out art house films during this decade, and a popular place for viewing underground films was the Guild Art Theatre in Santa Ana.
From the OC Weekly:
"Ten Best Chicano Oldie Songs To Dedicate on the Art Laboe Connection", by Gabriel San Roma, December 1, 2016: an excellent feature story that I recommend.
" .. A little known fact around these parts is that Cannibal & The Headhunters' mega-hit "Land of 1000 Dances" was born in Fullerton. Back in the day, Frankie "Cannibal" Garcia began improvising the Chris Kenner cover at the Rhythm Room in Fullerton. Garcia blanked out and filled the quiet mic with a "Na, na, na, na, na," intro that propelled the song to new heights and helped the East LA band tour with the Beatles, no less! Their 1966 album Land of 1000 Dances also featured the soulful ballad "Please Baby Please." Hit those high notes like Garcia and you won't have to beg that special someone!"
A picture of Cannibal and the Headhunters, where each Headhunter holds a shrunken head: