Woodstock WYYC Signature Collection Eastern Energies, Yin Yang Chime Woodstock's yin yang chime has 2 distinct halves that share a common tube, together their blissful tones make a complete sound experience Chime is 31-inch long and 15-inch wide; gift boxed Black and silver finished ash wood; 10 silver anodized aluminum chime tubes; silkscreened wind catcher Tuned to a pattern from Steve Reich's Piano Phase, written for 2 pianos with interlocking sequences in synch with one another Yin is tuned to d, e, a, b, c; yang is tuned to d, d, g, a, c