{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Mathematics of Music: Music Theory, 12 Tone Equal Temperament and its Origins Explained and Two New Alternative Tuning Systems","author_name":"John O'Sullivan","thumbnail_url":"https://www.ebooknetworking.net/books/095/664/big0956649203.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0956649203.html\">The Mathematics of Music: Music Theory, 12 Tone Equal Temperament and its Origins Explained and Two New Alternative Tuning Systems</a>","width":400,"height":300}