Released in 1987, the album is a continued exploration of the Middle Eastern influences, which first appeared on Uzed.

Keyboardist Andy Kirk takes the compositional lead instead, penning both the title track and "The Funeral Plain."

The latter is notable for being the second longest Univers Zero song (Only the track "La Faulx", off the Heresie album, is longer).

Denis temporarily broke up the band after the release of Heatwave due to financial difficulties and tension within the group.

[2] • Michael Delory: electric guitar• Daniel Denis: drums, percussion, voice• Dirk Descheemaeker: clarinet, bass clarinet, soprano sax• Christian Genet: bass guitar, nailskake• Patrick Hanappier: violin, viola• Andy Kirk: piano, synthesizer, voice• Jean-Luc Plouvier: piano, synthesizer, voice