content: THE ORDER WAS EASY TO DO. THE CD CAME QUICKLY. THE ORIGINAL MUSIC WAS GOOD SOUNDS FROM THE "DOORS". THE ALTERNATE VERSIONS ADDED A NEW TWIST TO THE DOORS SOUND,WITH VERY SUTTLE CHANGES. I PLAY IT WHILE WALKING THE TREADMILL, IT IS PLAYED AT THE RIGHT TEMPO FOR A NICE WALKING SPEED FOR ME,AND I LIKE THE MUSIC. WHAT DO I KNOW? I WAS A TEEN WHEN THIS STULL WAS NEW AND STILL LIKE IT.