Гений Бетховена: Музыка и математика
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![Музыка и математика: гений Бетховена [TED-Ed]](https://sun9-32.userapi.com/o52zS2ivIQ85ev0IhQMsRRX5ELQTEtRhtp2k2Q/RvRVgR64vSM.jpg)
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