The Black Flux is the second studio album by Norwegian avant-garde metal band Virus.

The Black Flux was recorded between June 2007 and July 2008[2] at Amper Tone Studios in Oslo.

AllMusic reviewer Greg Prato stated: "Most times, this Oslo, Norway-based outfit sounds comparable to Voivod, but at other times sound like a distant musical disciple of the Melvins (with far less distortion on the guitar and more discernible vocals).

These chaps like to stretch a guitar part until your brain goes numb, as evidenced by the album's title track, which rambles on for nearly three minutes before the vocals finally kick in.

Elsewhere, a tune like "Lost Peacocks" cuts to the chase quicker when it comes to the vocals, with a singing style (courtesy of Virus' singer/guitarist, Czral) that sounds patterned after the late/great Ian Curtis from Joy Division.