Mountain Man's transcendent unamplified live performances are slowly becoming the stuff of legend, and we're looking forward to experiencing that next month in person at SXSW. In the meantime, the great Yours Truly captures the next best thing: this otherwordly, chill-inducing clip of "Mouthwings," performed by the ladies in a tunnel/natural reverb chamber on Hawk Hill in San Francisco. Shot and edited by Nate Chan:

Go see more from Yours Truly's session with Mountain Man here.

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