Symphony of the Night is, in many's opinion, one of the greatest games to come along in a long time. It essentially re-made the Castlevania franchise into what it is today (the wildly popular "Castleroid" layout) but you didn't come here to read up about the game, you came for the music.
The music is composed by Michiru Yamane, a very talented woman. One of her biggest projects was Symphony of the Night, which she did a lot of sound effects for, as well as the music. She started working with Konami with "Bloodlines" on the Sega Genesis, and it just got better from there. The Symphony of the Night soundtrack, is hands down, the best Castlevania music there is. From heavy metal guitars, somber gothic choirs, jazzy eclectic mixes, and a host of others, this game weaves them all together in a beautiful journey through the bowels of Dracula's castle. I'm most fond of the music's classical roots given new life with electric guitars and rock overtones. Moody, haunting, atmostpheric... I could go on and on. I have a really hard time pinning down my favorite songs, mainly because I love them all!! Though I think my absolute favorites rest with "Prologue", "Dance of Gold", "Prayer", "Nocturne" only on the album, "Requiem For The Gods", and "I Am the Wind". I am a big fan of "I Am the Wind," but I know that there are a lot of people who aren't fond of it. Igarashi (the director) wanted to give the players something nice and relaxing to listen to after they beat the game, and this wistful, light jazz song does just that. "Dance of Pales" is also an excellent song. (See?? Too many!!) Anyway, without furthur ado, here is the album information and track listing. It unfortunately was never released in the States (more's the pity), but is fairly easy to get regardless. full title: Demon Castle Dracula X: Nocturne in the Moonlight Original Game Soundtrack
Track 01 - Metamorposis 1 > Video Intro
Track 02 - Prologue > Richter's battle with Dracula
Track 03 - Dance of Illusions > Dracula Battle
Track 04 - Moonlight Nocturne > Intro story
Track 05 - Prayer > Save Screen
Track 06 - Dracula's Castle > Entrance
Track 07 - Dance of Gold > Alchemy Lab
Track 08 - Marble Gallery > Marble Gallery
Track 09 - Tower of Mist > Outer Wall
Track 10 - Nocturne (Not used) (lyrics)
Track 11 - Wood Carving Partita > Long Library
Track 12 - Door of Holy Spirits
Track 13 - Festival of Servants > Boss theme #1
Track 14 - Land of Benediction > Game Over
Track 15 - Requiem For The Gods > Chapel
Track 16 - Crystal Teardrops > Underground Caverns
Track 17 - Abandoned Pit > Abandoned Mines
Track 18 - Rainbow Cemetery > Catacombs
Track 19 - Silence
Track 20 - Lost Painting > Inverted Library (and others)
Track 21 - Dance of Pales > Olrox's Quarters
Track 22 - Curse Zone > Inverted Catacombs (and others)
Track 23 - Enchanted Banquet > Succubus Fight Theme
Track 24 - Wandering Ghosts > Colliseum
Track 25 - The Tragic Prince > Clock Tower
Track 26 - The Door to the Abyss
Track 27 - Heavenly Doorway > Castle Keep
Track 28 - Death Ballad > Boss Theme #2
Track 29 - Blood Relations > Fight With Richter
Track 30 - Metamorphosis 2 > Inverted Castle video
Track 31 - Final Toccata" > Invert Marble Gallery (and others)
Track 32 - Black Banquet > Final Battle
Track 33 - Metamorphosis > Destruction of Castle video
Track 34 - "I am the Wind" > Final song (lyrics)
Thanks to Chudah's Corner for the extenisve soundtrack information! The Castlevania dungeon has also been invaluable for their tireless pursuit of Castlevania goodness. Give them a peek!
There is also a small album that picks up the songs introduced in the expanded castle from the Sega Saturn game a year later. The tracks for that are: Track 01 - The Master Librarian
And be sure to check out Konami, the ones who make it all possible.