I See You was written by an American composer, conductor and orchestrator of film scores who was known for the integration of choral and electronic elements, and for his frequent use of motifs associated with what?
I See You (Theme from Avatar):  It was written by James Horner and Kuk Harrell, with production done by Simon Franglen. James Horner: James Roy Horner (August 14, 1953 – June 22, 2015) was an American composer, conductor and orchestrator of film scores. James Horner:  He was known for the integration of choral and electronic elements, and for his frequent use of motifs associated with Celtic music.
Celtic music