Born in 1988 in Nîmes, France, Guillaume lives and works in Brussels as a musician, painter, sound installer, graphic designer, producer and label director. He studied at the Royal Academy of Fine Arts of Brussels (ARBA-ESA) and at ISASF La Cambre Architecture, Art and Landscape. He alsoworked with Eugène Robinson (Oxbow), Koonda Holaa, Marc Dilbak (Wolvennest), Sebastien Lacomblez and EOR, Jean Jacques Duerinckx. He released his music on I,Voidhanger Records, Ascetic Visions, WV Sorcerer Productions, Aurora Borealis, Paradigm Recordings, Epictural Productions, Base Records, Volok Records and he runs his own label Homo Sensibilis Sounds.

Guillaume Cazalet is a member of Neptunian Maximalism, ZAÄAR, Sol Kia, Jenny Torse, Aksu.