A Stray Child is a song from Silent Hill 3 and is track 9 on the soundtrack. The song was composed by Akira Yamaoka. In the game, the song plays in the alternate Hilltop Center when Heather Mason meets Vincent Smith for the first time.
In Silent Hill 4: The Room, an alternate version of the first portion of the song is used in the Water Prison (on the staircase with the Wall Men). A similar distorted-guitar riff (in the same key as "A Stray Child"'s riff) can be heard in a section of Silent Hill 2's labyrinth, as well as at the end of the track "Ashes and Ghost" on the game's soundtrack album.