The Complete Recordings of Howard Shore’s The Lord of the Rings are widely considered the definitive way to experience the music of Middle-earth. Unlike the original single-disc soundtracks released with the theatrical films, which provided a "greatest hits" or concert-suite experience, the Complete Recordings offer a scene-by-scene musical reconstruction of Peter Jackson’s Extended Editions.
If you have all three films as Complete Recordings, they should be: The Complete Recordings of Howard Shore’s The Lord