Laurence Glavin:

>I'd like to find out about the use of music in "Alien".

It's a long time since I saw it and was amazed to find when I looked
it up in the Internet Movie Database that it was released in 1979.
The music credits, found by clicking on the "more" link after the main
cast list, mentions Hanson's 2nd and Mozart's Eine Kleine Nachtmusik.
The rest of the music is by Jerry Goldsmith.

Richard Pennycuick