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Music tuned to 432 Hz is more relaxing

In a study of 33 volunteers in Italy, researchers found that music created with instruments tuned based on 432 Hz can decrease heart rate more than music tuned to 440 Hz.  The subjects were more focused about listening to music and more generally satisfied after the sessions in which they listened to 432 Hz tuned music.  Other studies show similar results.  ​DJ Boo-T has experimented with 432 Hz and alternate tuning on several songs.

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