Zwerm is an electric guitar quartet based in Belgium and founded in 2007. Over the years the group has collaborated with various composers, performers and visual artists. Zwerm has never strived for a one-sided artistic profile. During the past ten years the quartet dallied between English renaissance music, contemporary composed music and experimental pop/rock. The common denominator being not so much a particular stylistic view but rather a shared curiosity in all kinds of music.

They gave concerts in the UK, Europe, Mexico, Iran and the United States at major festivals such as Holland Festival, Ruhr Triennale, Ultima Festival and venues such as The Barbican Centre in London, deSingel, Handelsbeurs, Bimhuis…

They collaborated with musicians, composers, producers, theater makers, choreographers and visual artists such as Fred Frith, Stephen O’Malley, Rudy Trouvé, Benjamin Verdonck, Claire Croizé & ECCE, WALPURGIS, Post Uit Hessdalen, Bad Van Marie, Mauro Pawlowski, Joanna Baillie, Heleen Van Haegenborgh, Lucas Van Haesbroeck, La Muse en Circuit, Serge Verstockt & ChampdAction, Larry Polansky, Eric Thielemans, Yannis Kyriakides, François Sarhan, Stefan Prins...

Zwerm is Toon Callier, Johannes Westendorp, Bruno Nelissen and Kobe van Cauwenberghe.