The MythBusters hit the high notes and rattle some windows to explore sound myths. First, is it possible to extinguish a flame with the power of the human voice? Jamie and Adam test the pitch, frequency, and amplitude of different tones to chart their effect on a candle flame and on a propane torch. Meanwhile, Grant, Tory and Kari test two hypnosis myths: can post-hypnotic suggestions really change a person's behavior, and does hypnosis improve memory recall?

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