Every two years, San Francisco’s Soundwave Festival asks artists and musicians to focus their talents -- and their ears -- on one sonic idea. This year, it’s the sound of water.
In venues all over the Bay Area, Soundwave artists have been showcasing work based on this scarce natural resource.

One of those creations happened on a foggy evening earlier this summer. A group of people walked to Ocean Beach, put headphones in their ears, and hit play -- huddled together on the sand, watching the tide roll in.
They were listening to a piece called, ‘Music for a Changing Tide,’ by Nat Evans -- a musical composition made up of field recordings of barnacles clicking at low tide, drips of water, ocean wind, sea buoys -- all mixed together with sounds created in the studio.

To find out more about the Soundwave Festival, click here.