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Sound healing is the use of specially crafted sounds in an attempt to induce positive medical or spiritual effects. Some sound healers claim to allow listeners to expand consciousness, "repair DNA", or alter brainwave states, among many other claims. While studies using EEG and various neuroimaging techniques have shown that meditation may alter brainwave activity, sound does not and cannot alter DNA.
Sound healing is not to be confused with the legitimate practice of music therapy.
One of the more famous sound healers - and general cranks - is Leonard Horowitz, best known for his popularization of the frequency 528 Hz and of the so-called "solfeggio frequencies". He has given 528 Hz such epithets as "the universal LOVE constant", asserted that it repairs DNA, and has cherry-picked all kinds of convoluted numerological and pareidolic inferences to attest to 528's magic.[note 1] Conversely, he subscribes to the conspiracy theory of A440 tuning being imposed by the Rockefeller foundation and the Nazis, and refers to it as "...an institutionally imposed frequency that resonates in harmony with aggression and in dissonance with LOVE."
Despite the incoherent logic and handwavey babbling that is his work, Horowitz and his "solfeggio" frequencies (396, 417, 528, 639, 741, 852, created via numerology) are incredibly popular. You can find lots of hour-long 528 Hz DNA-repair spiritual meditation vibration relaxation videos on YouTube; people enjoy them because the music itself is soothing, not necessarily the tuning system used to derive it.
- For instance, a mile is 5280 feet, and he golden ratio is indicated by the symbol φ, which is the initial of the Greek word φιλία, which in English is LOVE, and 528 is the universal LOVE constant!