Soundtrack for the Voices in My Head: Volume 01 is an instrumental-based (second overall) studio album by the American electronic rock project, Celldweller.

[5][6] According to Klayton, "La Puerta Del Diablo" was inspired by a trip to the place of the same name in El Salvador.

Artistic Director : Sam Hayles On October 28, 2008, 15 tracks from the album were released for free on Celldweller's True Anthem Widget and the album was made available for pre-order at FiXT Store.

Following the success of the album, the instrumentals "Through the Gates" and "Ursa Minor" were added to Celldweller's live shows.

Additionally, the final version of "Birthright" which was updated with more production, was re-released on Wish Upon a Blackstar.