Vorneweg: About "Sky and Sand" whether or Extend Radio Edit I need not to say anything - just great. But there are a mix namely the Paul Kalkbrenner Remix (interpreter of "Sky and Sand" is in this case, Fritz Kalkbrenner), where an additional melody is played by "trumpet". My hope now lay on this Maxi. Unfortunately really are just the Radio Edit and the additional track "Azure" on the CD. For Maxi is very weak, but both tracks are of course super. Therefore, just 3 stars. I can recommend not this Maxi however. Since you have in "Berlin Calling" significantly more for your money.
Ps If anyone know where you can purchase the said Remix, please tell me.