Cousto, checked: my chart tones match Hans Cousto's tuning forks within 1.4 cents, except Mercury and Venus

My chart tones match Hans Cousto's planetary tuning forks within 1.4 cents for the Moon, the Sun's year, Mars, Jupiter, and Saturn, and miss by 65 and 359 cents for Mercury and Venus. A cent is a hundredth of a semitone, the smallest step on a piano; a trained ear notices about five. Cousto's cosmic octave (from 1978) raises an astronomical period by whole octaves into a tone, and a trade in tuning forks follows it. My chart-audio law (IP-A21) applies the same octave rule to the mean cycles of a chart drawn from the Earth. Where the two use the same cycle they yield the same tone: my Moon, 227.431 Hz, is his sidereal Moon, 227.43 Hz, 0.01 cents apart. Where a chart is drawn from the Earth they part: seen from here, Mercury and Venus circle the zodiac once a year on average, so in a chart they sing the year, while the forks give them their own orbits around the Sun. The law reproduces the tradition and parts from it exactly where a natal chart differs from the Sun-centred sky. This record holds the paper (OCO paper IP-A28). Part of The sound of the sky: 12 papers and their sounds: 10.5281/zenodo.23986764.