The Magical Mystery Chime features a musical phenomenon known as Octave Doubling. Here's how it works: Do you remember the Do-Re-Mi-Fa-So-La-Ti-Do scale from the Sound of Music? The "Do" notes that come at the start and end of this scale are the same note, an octave apart. Notes separated by an octave are considered harmonically equivalent and "ring" together in a way that adds a pleasing sound to the music. This chime takes this theory to the extreme - all the notes of the wind chimes are matched with its "octave double." Never before used in windchimes, this special tuning creates a heightening of the harmonics, creating a song that must be heard to be believed. The Space Odyssey Chime is tuned to the intervals of the first notes of the famous symphonic poem, Also Sprach Zarathustra by Richard Strauss, more commonly known as the powerful musical opening to Stanley Kubrick's 1968 film 2001: A Space Odyssey. The chime-within-a-chime design couples notes in four octaves which exponentially increases the soundscape and quadruples the octave doubling effect!