Cassius, a pair of veteran French producers of dance music (Philippe "Zdar" Cerboneschi and Hubert "Boom Bass" Blanc-Francard), that emerged with the single Cassius 1999 and the all-instrumental album Cassius (1999), blending house music, dub, pop and hip-hop.

The sprawling Au Reve (2002) added live instruments, some vocals and contained The Sound of Violence and I Am A Woman.

15 Again (2007) featured more vocalists (including Zdar himself) and contained Toop Toop and Eye Water (that sounds like a left-over from Au Reve with Pharrell Williams vocals). The second half of the album is devoted to moodier constructions that push the envelop of house music (Jackrock, La Notte).

Philippe Zdar died in June 2019 in a tragic accident just when Dreems (2019) was being released.