"Ennio Morricone dusted off instruments that no one dared to use. With him, film scores, especially for films by Sergio Leone, became inseparable from the [movie] characters and their stories, the intensity and emotion of which [the music] built. Tribute to a movie giant," Le Pen wrote on Twitter.
The Italian composer died in a Rome hospital at the age of 91 after falling and fracturing a femur.
Morricone wrote classical works and film scores, including "The Good, the Bad and the Ugly" directed by Leone.
Morricone received an honorary Academy Award in 2007 and a competitive one in 2016, for a soundtrack for Quentin Tarantino's "The Hateful Eight."