Joseph Thomas Youngman (born March 17, 1982), better known by his stage name Wolfgang Gartner, is an American DJ and music producer. Much of his music prior to 2010 was released through his own record label, Kindergarten, but he signed with Ultra Records in 2010 and Ministry of Sound in the UK in 2011.

Source: Wikipedia (https://en.wikipedia.org/wiki/Wolfgang_Gartner)