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The 28" Meinl Planetary Tuned Gong F2 Platonic Year has a resonate frequency of 172.06Hz (F2) on a A4=433.56Hz scale. The Meinl planetary gongs are made in Germany. Using the calculations of Hans Cousto (The Cosmic Octave) to match the frequencies of the sun, moon, and planets, each gong is tuned to produce the corresponding frequency. This gong includes gong cord.