Soundtrack album
A soundtrack album is any album that incorporates music from a particular feature film. In some cases, not all the songs from the movie are included in the album, however there are rare cases of songs in the trailers that do not appear in the movie but occur on the soundtrack album. Also, music that is not in the movie can sometimes be incorporated onto a soundtrack album; one notable example is the South Park: Bigger, Longer and Uncut soundtrack.
In some cases, recorded dialogue may be incorporated into the album. This comes in two kinds: audio clips from the movie itself (used on the album for Pulp Fiction, for example) or radio dramas that involve the characters from the movie involved in other events (example: King of Pirates, from FLCL)