André Tanneberger, better known by his stage name ATB, is a German DJ, musician, and producer of trance music. According to the official world DJ rankings governed by DJ Magazine, ATB was ranked No. 11 in 2009 and 2010, and No. 15 in 2011. In 2011, he was ranked as world No. 1 according to "The DJ List". He is best known for his 1999 single "9 PM " which was a No. 1 single in the United Kingdom.