Large Swinging Wing Chime - SPIRAL - 9 BarTuning is in the A=432 system C4 D4 E4 G4 A4 C5 D5 E5 G5 Sound Spiral 1 1 2 9 Bar: The archetype of the pure Cycle of Fifths in its pentatonic expression. This possibly represents the most harmonious and natural configuration of musical tones and is found in music cultures all over the world, especially used in elementary folk music and celebratory tunes. Its invitation and character is one of expansion, opening up, widening and surely uplifting.