Musician Bobby McFerrin uses the pentatonic scale to reveal one surprising result of the way our brains are wired. You will be intrigued by how humans process thoughts and think. Look at this video you are going to absolutely love it. Watch it till the end.
"It's an exploration of what constitutes a "musical" sound -- all notes are just tones of a certain frequency, yet our minds find certain sequences of tones more aurally pleasing than others. If you play a certain note, or a certain couple of notes, your mind will want to fill the next one in predictably. It's the scientific pursuit of why we consider certain things to be beautiful, and why certain sequences are embedded in our brains."
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