Question: Joseph Dubin composed the soundtrack for the RKO Radio film released in what year?
Sentence (from "List of RKO Pictures films"): RKO is an acronym for "Radio-Keith-Orpheum", created when RCA orchestrated a merge between Film Booking Offices of America (FBO) and Keith-Albee-Orpheum (KAO), and was officially announced on October 23, 1928.
Relevant evidence: No