Leon Bolier (Dutch pronunciation: ˈleːjɔn boːˈliːr; born 1980) is a Dutch classically trained trance composer, DJ, and record producer. His career began to flourish in 2008 with a number of successful song releases including the hit song "Ocean Drive Boulevard". He placed #95 on the DJMag's 2008 list of the top 100 DJ's in the world, and moved up 32 places in 2009, and rests at #68 in 2010. He has had his songs played by top DJs like Tiësto and Armin van Buuren as well as his tracks appearing on famous trance compilations such as In Search of Sunrise 4: Latin America and A State of Trance 2006. His latest album, Phantasma, was released on August 30, 2010. By the following year, which coincided with his complete dropping out of the DJMag's list of the top 100 DJ's, the first vestiges of his change of heart in the musical style began to flourish, which had become more apparent over the course of time since and transformed into the new representative standard of his current works, as depicted in "Disco Davai" among such, which bear no resemblance to what he originally was recognized for. At the end of 2014, Leon started working on a yet unnamed deep house album under his new alias WSTLNDR, to be released on Black Hole in 2015.