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Surfacing, released in 1997, is Sarah McLachlan's best-selling album, having sold over 16 million copies worldwide. The album features the hit singles "Building a Mystery," "Sweet Surrender," and "Adia," which contributed to its commercial success. Surfacing received critical acclaim for its introspective lyrics, haunting melodies, and McLachlan's powerful vocals, solidifying her status as one of the most successful female singer-songwriters of her time.