James Roy Horner (August 14, 1953 – June 22, 2015) was an American composer, conductor, and orchestrator of film scores. He was known for the integration of choral and electronic elements, and for his frequent use of motifs associated with Celtic music.
Horner's first major score was in 1979 for The Lady in Red, but he did not establish himself as an eminent film composer until his work on the 1982 film Star Trek II: The Wrath of Khan. His score for James Cameron's Titanic is the best-selling orchestral film soundtrack of all time. He also wrote the score for one of the highest-grossing films of all time, Cameron's Avatar.
Horner collaborated on multiple projects with directors including Don Bluth, James Cameron, Joe Johnston, Walter Hill, Ron Howard, Phil Nibbelink and Simon Wells; producers including George Lucas, David Kirschner, Jon Landau, Brian Grazer and Steven Spielberg; and songwriters including…Read more on Wikipedia