The Walking Dead's haunting musical score is composed by Bear McCreary. Thomas Golubic is the Music Supervisor.

In addition, the series uses various audio tracks per episode as follows:

Season 1

Episode 101 : 10/31/2010 “Days Gone Bye”
Episode 102 : 11/02/2010 “Guts”
Episode 103 : 11/14/2010 “Tell It To The Frogs”
Episode 104 : 11/21/2010 “Vatos”
Episode 105 : 11/28/2010 “Wildfire”
Episode 106 : 12/05/2010 “TS-19” (Season Finale)
Misc Trailers & Promos

Song: Sunshine (Adagio In D Minor)
Artist: John Murphy
Scene: Everyone is leaving camp
iTunes US:

Song: I'm A Man
Artist: Black Strobe
Scene: Closing Scene / End Credits
iTunes US:

Song: Space Junk (Wang Chung '97)
Artist: Wang Chung
Scene: Closing Scene / End Credits
iTunes US:

Song: The Sun Ain't Gonna Shine Anymore
Artist: The Walker Brothers
Scene: Comic-Con / "Halloween" Trailer (4+ Minutes)
iTunes US: