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- Navigation Series - CD
Navigation Series - CD
NOTE: single CD price includes shipping and handling fees to addresses inside the contiguous (lower 48 adjoining states plus Washington, D.C.) of the U.S.A.
Additional shipping fees apply to Hawaii and International orders.
CD - Hertz frequencies 111, 222, 333, 444, 555, 666, 777. 888, 999 created with tuning forks using a Steinway piano soundboard as the amplifier.