This is a very good trance tune with all the necessary hooks. Upbeat, fast pace, few mysterious and immaculate vocal lines. If you liked say Sandstorm by Darude, Insomnia by Faitless or Encore Une Fois by Sash! you'll like this also. In the moments you need energy, put this tune in, volume up and forget everything.... you'll be lifted in the sky with all those castles around....European DJ's test and develope their tunes in front of passionate raving audiences and they can really sense what the people likes, what is currently "in". Take their knowledge and competence into studio, make a commercial production and you have a single like Castles in the Sky playing in the air."Oh tell me why, do we build castles in the sky?"