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Is there mathematics in music? How did Pythagoras "invent" music and did he invent music? ???? How did the modern musical system come about and how are its sounds related to each other? Why are there seven notes, and seven white and five black keys on the piano? Where can I read more about this? Roman Oleynikov, mathematician, music theorist: graduate of the Department of Applied Mathematics at MEPhI and the directing department at VGIK, co-author of the YouTube channel Music Theory - Science4Music: / musictheorynew lecturer at Level One: https://levelvan.ru/lecturer/33154 author of the books "Construction of Musical Systems" and "Music Theory: Visual Representation of Harmony": https://urss.ru/cgi-bin/db.pl?lang=Ru... co-author of the music research website https://givemeclassic.ru employee of the laboratory of biomechanical systems at the Institute of Mechanical Engineering of the Russian Academy of Sciences. Our podcast channel: http://nauka-pro.ru/podkast Support the project: http://nauka-pro.ru/podderzhat-proekt #SciencePRO #MusicTheory #s4m #sciense4music #DGPB #sciencepop #RomanOleynikov #antiquity #mathematics #music