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In his profile of audio artist Jeff Surak (“Heart of Noise,” 4/7), writer Mike Keefe-Feldman misidentified one of Surak’s releases. It’s Violet’s Sometimes in the Quietest of Moments the Pipes Don’t Fit and the Bathtub Makes You Scream and the Toaster Wants Your Blood, not Let the Sunshine In, that was initially released in an edition of 23 copies.