Hi,
"Bajo Fuego" was not actually written for the film. Its is a self-contained "concert" arrangement created especially for the album, and based on a chase motif heard in the film (when Nick Nolte is pursued by Somosa's troops after photographing Gene Hackman's murder).
Goldsmith took this motif and weaved it into the impressive "mini concerto" which he titled "Bajo Fuego" (which literally means "Under Fire" in Spanish). Another album track "A New Love" (based on the film's love theme) was also written specifically for the album.
Goldsmith also did a significant amount of editing and remixing, and even personally re-recorded and performed all the synth parts. In view of the unusual amount of time, effort and extra creativity which was put into this album, it is not surprising that UNDER FIRE is one of Jerry Goldsmith's best stand-alone works.
Anyway, just wanted to pass this along.
Best,
Paul MacLean