Question: Who wrote the music score for Horizon Pictures first production ?

Context paragraphs:
The African Queen (film): 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.

Annie Award for Music in a Feature Production: 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.

Abhishek Pictures: Abhishek Pictures first distribution was the 2010 film "Yamudu", which was on the budget of 150 million240 million to produce.  The company has also distributed films such as "Brahmotsavam", "Rudhramadevi", and "Srimanthudu".  It has also distributed Bollywood films, such as "Atithi Tum Kab Jaoge? " and "Ekk Deewana Tha", and a number of Hollywood films, including "10,000 BC", "2012", and "Men in Black 3".

Christmas Grace: Christmas Grace is an Christmas-related film about two competing toy stores.  It was produced by Bright Horizon Pictures and Crystal Creek Media, the latter of which created films such as "Creed of Gold" and "Courageous Love".  Filming of "Christmas Grace" took place around several locations in Southeastern Michigan in early 2012.  The film was released on October 7, 2014.

Horizon Pictures: 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.

Roger Corman's Cult Classics: Roger Corman's Cult Classics is a collection of DVD and Blu-ray discs of films produced by Roger Corman.  It began as a collaboration in 2010 between Roger Corman's New Horizon Pictures and Shout!  Factory in 2010.  The project ended in 2012.

Spring Storm: Spring Storm is a 1937 play written by American playwright Tennessee Williams.  Tennessee Williams wrote "Spring Storm" when he was twenty-six years old, in 1937, while studying as an apprentice.  "Spring Storm" received poor reviews in Williams’s playwriting course, and it did not receive its first production until 1995 in Berkeley, California.  The European premiere took place at the Royal & Derngate Northampton on 15 October 2009, running alongside "Beyond the Horizon" by Eugene O'Neill.  Both productions subsequently transferred to the Royal National Theatre in 2010 to the Cottesloe Theatre.  Written and rewritten between 1937 and 1938, this full-length play depicts life and conflicted love in a small Mississippi Delta town during the Great Depression.

Lawrence of Arabia (film): Lawrence of Arabia is a 1962 epic historical drama film based on the life of T. E. Lawrence.  It was directed by David Lean and produced by Sam Spiegel through his British company Horizon Pictures, with the screenplay by Robert Bolt and Michael Wilson.  The film stars Peter O'Toole in the title role.  It is widely considered one of the greatest and most influential films in the history of cinema.  The dramatic score by Maurice Jarre and the Super Panavision 70 cinematography by Freddie Young are also highly acclaimed.

Jacob's Hammer: 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.

Melba (film): 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.

Supporting paragraphs: Horizon Pictures The African Queen (film)
Answer: Allan Gray.