Julien Callewaert, better known as Colaps, is a French beatboxer. Colaps initially worked as a lead developer before deciding to pursue beatboxing full-time. French Champion, La Cup Champ, GBB Champ, Many more.

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Colaps was a short-lived post-rock band from Constanta, Romania. Formed in 2005, the band was known for their eclectic mix of hardcore, funk, reggae and penchant for jam sessions. Initially a 3 piece, personnel changes led to the band becoming a 5 piece ; no studio demos were recorded, but the band left behind a few live recordings . Members of Colaps went on to play in bands such as Serafic , Blind reason , Cadavrul , The Inner , Kesarion Breb et caetera. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.