question: Who wrote the music score for Horizon Pictures first production ?
answer: Allan Gray.
context: Title: Melba (film)
  Passage: Melba is a 1953 musical biopic drama film of the life of Australian-born soprano Nellie Melba, written by Harry Kurnitz and directed by Lewis Milestone for Horizon Pictures, marking the film debut of the Metropolitan Opera's Patrice Munsel.
  Title: Jacob's Hammer
  Passage: Jacob's Hammer is a British horror Film starring Helen Holman and George McCluskey.  The film was directed and written by Angie Bojtler.  This is Arkady Pictures first film.  It has a limited theatrical release across the UK October 2012.
  Title: Annie Award for Music in a Feature Production
  Passage: The Annie Award for Music in a Feature Production (or Annie Award for Music in an Animated Feature Production) is an Annie Award given annually to the best music in an animated feature film, theatrical or direct-to-video.  It began in 1997 as the "Annie Award for Best Individual Achievement: Music in a Feature/Home Video Production".  Throughout the following years, the title was renamed "Outstanding Individual Achievement for Music in an Animated Feature Production", "Outstanding Individual Achievement for Music Score in an Animated Feature Production", and "Outstanding Music in an Animated Feature Production" before changing to its current title in 2005.  It was retitled "Best Music in an Animated Feature Production" in 2006 for three years before being reverted to "Music in an Animated Feature Production" in 2009.
  Title: The African Queen (film)
  Passage: The African Queen is a 1951 British-American adventure film adapted from the 1935 novel of the same name by C. S. Forester.  The film was directed by John Huston and produced by Sam Spiegel and John Woolf.  The screenplay was adapted by James Agee, John Huston, John Collier and Peter Viertel.  It was photographed in Technicolor by Jack Cardiff and had a music score by Allan Gray.  The film stars Humphrey Bogart (who won the Academy Award for Best Actor – his only Oscar), and Katharine Hepburn with Robert Morley, Peter Bull, Walter Gotell, Richard Marner and Theodore Bikel.
  Title: Horizon Pictures
  Passage: Horizon Pictures (GB) Ltd was a film production company founded in the United Kingdom by the Austrian-born American film producer Sam Spiegel.  The company's first production was the Academy Award-winning "The African Queen", starring Humphrey Bogart and Katharine Hepburn, in 1951.
citations: The African Queen (film) Horizon Pictures