ATB ( born as AndrÃ Tanneberger on February 26 , 1973 in Freiberg , Saxony , Germany ) is a German DJ , musician , and producer of electronic dance music . AndrÃ Tanneberger , under the stagename of ATB , ( born 26 February 1973 , Freiberg , Saxony , East Germany ) is a German DJ , musician , and producer of Trance music .