Some of these recommendations are great and I nabbed a few. Is there anything like Holst's The Planets, btw (don't say John Williams).
For what I'm doing, I've really preferred Dvorak, Holst, Tchaikovsky and Stravinsky. Anything similar to those guys?
Check out Erich Korngold (not to be confused with Erik Korngold, the gay pornstar with the 11" hog). EriCH Wolfgang Korngold was an Austrian Jewish composer who later immigrated to America. He lived during the first half of the 20th century. And is primarily famous for his violin concerto, one of his operas, and his many film scores. Try his violin concerto (get the recording with Gil Shaham on violin if you can).
Here's a lovely aria from one of his lesser known operas
Also check out Richard Strauss (not to be confused with Johann Strauss II, the famous composer of waltzes). You've surely heard the opening of his tone poem "Also Sprach Zarathustra" which most people associate with the movie 2001: A Space Odyssey. My favorite tone poem by him is Ein Heldenleben.
One of the most amazing moments in all music history here:
Hope you like.