Magical Mystery Chime - Calypso IslandMust be heard! Special acoustic effect makes "Yellow Bird" take flight! Our Magical Mystery Chimes feature a musical phenomenon known as octave doubling. Here's how it works 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