Classical:
Aram Khachaturian - Spartacus, Adagio of Spartacus and Phrygia (Suite II No. 1)
Bedřich Smetana - Ma Vlast, Moldau
Antonín Dvořák - Symphony No. 9 " From the New World", 4th movement
Gustav Holst - The Planets, Jupiter: Bringer of Jollity
Carl Orff - Carmina Burana, O Fortuna Imperatrix Mundi (influenced dozens of film soundtracks such as "The Omen")
Soundtracks:
Elmer Bernstein - The Magnificent Seven Jerome Moross - The Big Country Alex North - Spartacus, Love Theme Randy Edelman & Trevor Jones - The Last of the Mohicans ...and so on, I could go on forever, especially with Soundtracks. Some songs: Neil Young & Crazy Horse - Cortez the Killer Bob Dylan - Shelter From the Storm Van Morrison (like Young and Dylan, Van the Man wrote plenty of epic songs. I'll just mention here "Wild Honey" from "Common One", "Have I Told You Lately" from "Avalon Sunset" and of course "Moondance") The Flying Burrito Brothers - Wild Horses (Gram Parsons' better version of Jagger&Richards' song) Genesis - Carpet Crawlers (while Peter was still around)