Complete Season 9 music information.

9X05  -   4-D
 
Song Title: Monica's Decision
Composer: Mark Snow
Album: -
Used in: Scene where Reyes decides to end Doggett's life in the hospital.
 

9X06 - Lord of the Flies
 
Song Title: No Good Trying
Artist: Syd Barrett
Album: Best of: Wouldn't You Miss Me? - The Madcap Laughs
Used in: Music that Dylan Lokensgard turns on in his room and turns it up louder when his mother is calling him. The cover pictured on the left was also a poster up on Dylan's wall.
Download: Lyrics - Real Audio

Song Title: Terrapin
Artist: Syd Barrett
Album: The Madcap Laughs
Used in: Background music in Dylan Lokensgard's room when Natalie Gordon comes up to talk to Dylan.
Download: Lyrics - Real Audio

Song Title: Opel
Artist: Syd Barrett
Album: Opel
Used in: Dylan mentions the line: "a dream in a mist of gray," to Natalie in the same scene as "Terrapin" was playing in the background.
Download: Lyrics - Real Audio

 
9X07 - John Doe
 
Song Title: Semper Fi
Composer: Mark Snow
Album: N/A
Used in: Scene where Doggett tries to figure out who he is and sees his tattoo on his arm.
 

9X08 - TrustNo1
 
Song Title: Barcarole ("June"), Op. 37, No. 6 from The Seasons
Composer: Pyotr Il'yich Tchaikovsky
Album: The Best of Tchaikovsky
Used in: The teaser during Scully's voiceover and then used towards the end of the episode in the slow-motion train scene.

Song Title: Barcarole (X-Files version)
Performed by: Richard Grayson
Album: -
Used in: The teaser during Scully's voiceover and then used towards the end of the episode in the slow-motion train scene.

Song Title: Scully's Theme
Composer: Mark Snow
Album: -
Used in: The end scene while Scully writes the e-mail.
 

9X11 - Providence
 
Song Title: This Is Not Happening Theme
Composer: Mark Snow
Album: -
Used in: Part of episode score; when the alien cult members gather on top of the spacecraft near the end of the episode.
 

9X13 - Audrey Pauley
 
Song Title: Void
Composer: Mark Snow
Album: -
Used in: Reyes steps outside of the hospital, only to find out she's in another world.

Song Title: Back to Life
Composer: Mark Snow
Album: -
Used in: Scene where Audrey leads the way for Reyes to get back to the real world.

Song Title: Goodnight
Composer: Mark Snow
Album: -
Used in: Near the end of the episode where Doggett and Reyes say goodbye to each other