For something different, try Philip Glass’ score to Mishima. I think it’s the most accessible (yet ambitious, and really well accomplished) piece he’s ever written. I’d rent the movie first, though, and not just to screen the music. If you’re unfamiliar with the story, you’ve a one-of-a-kind film experience to look forward to.
And if you’ve never seen the original **The Wicker Man **[U.K., '73], you should, for the folk music (about half of which is instrumental) as much as for the rest of it. The soundtrack boasts some very old folk songs (some written by Scottish poet Robert Burns, and one dating back to the 13th century, and believed to be the oldest song in the English language) and various instrumental pieces – in tones variously lighthearted and bawdy, lilting and erotic, and eerie and ominous. The soundtrack has been reissued on CD, twice, on different labels (the Silva one is the one to get, though).