Good Morning !!! . Pioneer PSC-5A . In 1962, Pioneer Introduced the world’s first separate stereo system with detachable speakers. This model was extremely successful and became the industry's standard format. .
The musical system known as the Circle of fifths form specific geometries. All matter is a vibration in the structure of space-time and the study of the structure of space is called geometry, therefore music and matter itself is geometry in motion.
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