Horner was nominated for a further eight Oscars, for scores and songs for the films Avatar, House of Sand and Fog, A Beautiful Mind, Apollo 13, Braveheart, Field of Dreams, An American Tail and Aliens. He was also the composer for the two highest-grossing films of all time, Avatar (£1.7bn) and Titanic (£1.3bn) and is listed on the Internet Movie Database as having 95 soundtrack credits and 158 composer credits.
"My job is to make sure at every turn of the film it's something the audience can feel with their heart," Horner said in a 2009 interview with the Los Angeles Times.
"When we lose a character, when somebody wins, when somebody loses, when someone disappears - at all times I'm keeping track, constantly, of what the heart is supposed to be feeling. That is my primary role."
A hard loss for the film industry, he will be missed.