Music and sounds help immerse the player into an environment with a link to the animations and events within the game. Music is used to help sway emotions of the player to help relate them to the feelings being portrayed in the game, music must be suitable for the right time and the right place to be effective. The quality of sounds and whether the sounds fit the game's animations and events is what counts most.
Lets start off with Crysis 1's music and sounds. I have to say the sounds used in C1 were the best I’ve heard in a game, well until this year anyways, sounds in games have been getting pretty good with game developers spending the time that's needed on sounds as they know its importance.
Crysis 1's music, composed by Inon Zur, was great. I don't really know how to explain music really, but I'm just going to say that it sounded great and felt right in crysis. There was natural sounding music when you were on the island level and there was eerie sort of music in the alien core level. I think there wasn't enough music in C1, being huge durations in between when music played. But that probably wasn't a bad thing, it gave time to think about being alone (at most points) on an unpredictable island.
I can safely say from my thorough experience of C1 that there’s a large variety of sounds, ranging from:
? Gun shots with each different gun having its own unique sound (such as the pistol, scar, fy-71, smg, and the shotgun etc), there’s the silenced sounds of most weapons when the silencer is attached
? Reloading weapons
? The sound when a bullet collides with a physical object e.g. barrels (love the barrels in Crysis 1 for some reason, actually make that every miscellaneous object in Crysis, oh and cant forget the palm trees

? When a bullet hits an enemy
? Starting up a vehicle and driving it and/or crashing it
? Grenades
? Explosions from explosive objects
? Punching and throwing stuff (including Koreans lol)
? The splashing of water when you jump in, when you shoot water, or throw something in it.
To the more subtle sounds like:
? Footsteps
? Moving through foliage e.g. bushes
? Moving your weapon to view through iron sights/reflex sight/scope
? Swapping weapons
? Empty bullet shell/s fall to the ground
And the ambient sounds such as:
? Wind
? Fire crackling
? Sea's waves
All with quality and which fit in with the animations and events within C1. I’m very happy with the music and sounds in C1 and from what I’m hearing in Crysis 2 its going to be epic (plus the epic cg like graphics

Now what did you think about the music/sounds in Crysis 1? Any specific music/sounds you really liked? Or how do you like Crysis 2's music/sounds at the moment? How important is music/sounds in a video game to you? Any musicians or sound developers here, or anyone who wants to be?