1 is a compilation album by American sludge metal band Kylesa, collecting previously unreleased tracks, alternate versions of released tracks and one new track.

[2] It was released on November 16, 2012 in Europe and November 20, 2012 in North America through Season of Mist.

The collection features a newly recorded track titled "End Truth" as well as a cover of Pink Floyd's "Set the Controls for the Heart of the Sun" and Buzzoven's "Drained".

1 album personnel adapted from the CD liner notes.

[3] Kylesa Additional personnel