Bart Claessen, born January 22, 1980, Asten, Netherlands is a Dutch dance DJ. He is best known for the techno songs "On the Move" and "Infected" (both 2001 and as Barthezz), which reached Number 18 and 25 in the UK Singles Chart respectively. He has released a number of tracks under his own name, most notably "First Light" (2007) and "Madness" (2008). He has made numerous appearances at nightclubs across Europe.
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