Harmony in Ultraviolet

Harmony in Ultraviolet is the fourth studio album by the Canadian electronic musician Tim Hecker. It was recorded in two years, and released on October 16, 2006, via Kranky. Described as ambient and experimental, it uses instruments including electric guitars, pipe organs, and keyboards, along with distortion and samples. With fifteen tracks, sounds change throughout them. The cover art depicts a memorial in Bologna about the Italian Resistance.

Harmony in Ultraviolet received positive reviews from magazines such as Pitchfork, PopMatters, and Tiny Mix Tapes. Critics focused on the structure of it, and comparisons were made to Hecker's earlier works and On Land by Brian Eno. It would appear in several rankings, including one from Pitchfork as the ninth best ambient album of all time.