Kastra at Temple Denver One of the most electrifying DJ Producers out at the moment, Kastra has been putting out a steady stream of hits that have been released on some of the most prominent dance music labels in the world such as Spinnin Records, Ultra Records, Armada Music, Musical Freedom, Revealed Records, and Protocol Recordings. Boasting support from Martin Garrix, Tiesto, Avicii, The Chainsmokers, Showtek, Knife Party, David Guetta, and many more, Ray Decker better known as “Kastra” has made quite a name for himself in a few short years.