The Love Frequency - You can buy an instrument to create this noise; the Lovertuner mindfulness tone necklace. "Lovetuner is the term for a tiny single-tone flute, through which we can align ourselves with the 528 HZ frequency - the so called Love Frequency." It makes you happy. You can find the sound online. It's a nice sound, but I didn't achieve bliss listening to it. Maybe it takes Pavlovian training? $58 retail.
The Brown Note - The brown note is a hypothetical infrasonic frequency that causes humans to lose control of their bowels due to resonance. Attempts to demonstrate the existence of a brown note using sound waves transmitted through the air all have failed (notably on Mythbusters). It is supposed to be somewhere in the range of 2Hz to 15Hz.
In South Park's season 3 episode 17 *"World Wide Recorder Concert") , the brown note is a central plot point. The boys rewrite the music for Yoko Ono and Kenny G's worldwide recorder concert to include the brown note. Naturally, they succeed at the concert, and with the international television audience as millions of people around the world instantly involuntarily evacuate.
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