Real recordings from the buoy off Puente Romano. The water you're looking at is rebuilt from the recording you pick; the chord breathes at its waves' own rhythm; every crest rings a bell. Nothing is invented.
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Longest wave, lowest note — eight voices on a pentatonic scale. Glass plays soft sines and long bells; chop plays edgier voices, quick bright bells and a hiss of spray on every crest. Real time is the honest 205 s; 4× plays it at a musical tempo. How a buoy measures a wave · Not for navigation.