Reginald Hazeltine Bassett

Reginald Hazeltine Bassett (b. Bernard Hazeltine Bassett 3 September 1878; d. 24 April 1951) was an American composer and orchestrator who led a prolific career in film. He contributed music to over one hundred major movies from the 1920s to the 1940s. He is virtually unknown because he worked under a film studio system that not only controlled the copyrights to his music but also allowed others to take screen credit for his work.

...
Wikipedia