OCTOS was formed in 1996 as a non-profit, tax exempt, public benefit corporation, dedicated to the preservation and use of theatre pipe organs and theatre organ music. Its primary purpose is to maintain and support the Fullerton High School Plummer Auditorium Wurlitzer pipe organ, which was originally installed in 1930. OCTOS is a chapter of the American Theatre Organ Society (ATOS).

Click here for the OCTOS (Orange County Theatre Organ Society) Membership Application (opens a PDF File)

If you would like to apply for ATOS membership separately from OCTOS, click on the following link:

Click here for the ATOS (American Theatre Organ Society) Membership Application

If you are interested in joining Los Angeles Theatre Organ Society, click on the following link:

Click here for the LATOS (Los Angeles Theatre Organ Society) Membership Application