Musically Tuned - The major Pentatonic scale is the most widely used in the world, and features notes of the black keys on a piano. Our soprano, alto, and bass chimes play all the notes to Amazing Grace. All of our Pentatonic chimes blend well with Hawaiian and Westminster chimes from Music of the Spheres. Made in the USA - Music of the Spheres wind chimes are individually handcrafted and come in 5 sizes (Soprano, Mezzo-Soprano, Alto, Tenor, Bass) with 11 tunings (Pentatonic, Hawaiian, Quartal, Balinese, Chinese, Japanese, Mongolian, Whole Tone, Aquarian, Gypsy and Nashville) and the Westminster, Contrabass and Basso Profundo are offered in one unique size and tuning. All Weather - Tempered aluminum alloy tubing is custom manufactured to our exacting specifications and will never rust. Our finish preserves the wind chime's appearance and increases durability in hostile outdoor environments. Advanced Materials - Tough synthetic cordage is highly resistant to abrasion, and ultra-violet degradation. Central tube suspension with smoothly polished tube ends prevent cord abrasion typical of other, less labor-intensive tubular wind chimes suspension techniques. Detachable Windcatcher - With the same material and finish as the tubes, our windcatcher is the ideal size, weight, and shape for optimal chime performance in 8 - 10 mph wind velocity. The hook assembly provides a simple but effective method of varying the wind chime's activity level.