A hydrophone lowered into a misty canal beside a field recorder.

November 5, 2026 · 7 min

Recording a canal at six in the morning

A hydrophone, a thermos and the sound of a boat engine two bridges away.

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  • Free, every Sunday · 2,600 readers

    A free letter every Sunday: where I recorded this week, what it sounded like and one sound to listen for.

    One email every Sunday. Unsubscribe any time.