Julee Cruise almost single handedly did all of the vocals for the songs on Twin Peaks. While soundtracks were produced for both the series and the film, not all of the songs made it onto the CD.

Any Lynch fan wanting a complete collection of the songs on the series, can get their fill with the two Julee Cruise albums. (The other is called "Voice of Love"):

Not only do these albums complete the Twin Peaks music, but much of the music and lyrics were written by Lynch.