Prologue and Heaven N Hell are two banging traks from the mighty Electrolysis records.Great traks, great art work for your mind, energy take control. I own the traks on one 12" disc,when I first starting out mixing hardnrg music this record was one of the first records I ever bought. Both tunes remind me of jumping around my room loveing the hard fast rush of energy, even know I couldnt mix properly at the time, It didnt matter because both of the tracks were so energic and phat. I just love to listen to them. The artists involved are inspiring and have helped me to find other great traks in the energy world....Energize