There are multiple bands with this name. 1) Berlin school techno producer from Scotland. 2) French metal band. 3) An alias used by ambient producer Pete Namlook (aka Air, Namlook) for trance material. 4) Christian Rapper out of Albuquerque, NM 5) Syn was a british psychedelic rock band. Their song 14 Hour Technicolour Dream appears on the compilation called Nuggets, Vol. 2: Original Artyfacts from the British Empire & Beyond. 6) Syn is a new band from ex-High and Mighty Color vocalist Halca with Tony and Gunji.