The majority of the instruments you'll hear are computer instruments, with a few live performances on top to add a bit of warmth. For the older music, I used one of those Sound Blaster cards that let you load samples into memory. More recently, I've been using the freeware sfz soundfont sampler. I have an m-audio keystation 49e midi keyboard for picking out melodies. Influences include Danny Elfman, Vangelis, Bernard Herrmann, Hans Zimmer, Ennio Morricone, and all the big movie guys. I grew up listening to them, and they remain a big influence in everything I write.