When it comes to epic music, several groups must mention instant music, such as E.S. Bottoms, Two Steps From Hell, and of course Hans? The works of Zimmer, Vangelis and others, many of their music is used to make background music for grand scenes and movie previews. You may have heard of many of them, but you may not know. Just pick a few songs from your own music list: electric Romeo, Magika, Spiritus Elektros, Serena, Prism, now that we are free, the heart of courage and so on.
There are still many things that have not been listed. I'm interested in searching their complete music on the electric donkey.