I'll not go too deeply into the actual music contained on these CDs; suffice too say that it's beautiful, haunting, witchy folk music and one of the finest soundtracks ever released.
This review is aimed at those who are confused by the numerous discrepencies between the two releases. As one previous reviewer pointed out, there are two seperate releases of The Wicker Man soundtrack, and Amazon have rather lazily mixed up the reviews.
The first release (Trunk Records, 1997, white cover, 27 tracks) is generally considered to be the inferior of the two. It was sourced from the music-and-effects reel produced for the film, so the tracks contain background effects and the occasional snatch of dialogue. The sound quality is pretty poor, with a 'recorded from the TV using a low quality microphone' feel to it.
The second release (Silva Screen Records, 2002, yellow/orange cover, 16 tracks) is of much higher quality, due to the fact that the original studio recordings of the songs had been located. It is these versions that were originally intended for vinyl release in the 70s by Paul Giovanni/Magnet. Sound quality is crystal clear and the songs included are mostly complete, not the chopped-up versions that appear in the 84 minute cut of the film and the first soundtrack. Also, and perhaps most importantly, it includes the wonderful 'Gently Johnny', not available on the original soundtrack.
So, the second release is the clear winner, right? Well, not entirely. Firstly, the original inferior release contains some incidental music from the film not included on the second release. Secondly, the versions of 'The Landlord's Daughter' and 'Willow's Song' on the second release feature different singers to those who actually performed the songs for the film! It's almost as if they are cover versions. Regarding 'The Landlord's Daughter', the song in the film was actually sung by the cast who appear in that scene. The version here on the second release features an entirely different set of singers, recorded especially for Giovanni/Magnet's aborted 70s release. The story surrounding 'Willow's Song' is a little more steeped in mystery, but, whatever, it's not sung by the same woman who sang it in the film. So, if you want the versions of these songs as they appear in the film, you've got to go for the first release.
Also, I disagree, to a certain extent, with some of the other reviewers regarding the background effects audible on the first release. While it is undoubtedly nice to hear the effect-less versions of the second release standing on their own as beautiful folk songs, only the versions with the sounds effects in the background retain all of the atmosphere and mystery that made the music of The Wicker Man so haunting and memorable.
The conclusion - both releases have their merits, and hardcore fans of The Wicker Man need both releases. Casual listeners can choose between faithfulness to the atmosphere of the film (first release) or excellent sound quality (second release).