Songs in the Key of X: Music from and Inspired by the X-Files is a 1996 compilation album released in association with the American science fiction television series The X-Files. The album contained a mixture of songs that were either featured in the series, or shared thematic elements with it. Songs in the Key of X peaked at No. 47 on the Billboard 200 album sales chart after its release. The album's title is a play on the title of Stevie Wonder's 1976 album Songs in the Key of Life.