The work was so significant it was translated into Hebrew in the 13th century and remained a primary reference for centuries. ResearchGate specific sections of the book, such as Al-Farabi's descriptions of the or his theories on musical therapy (PDF) The Great Book of Music of Al Farabi - ResearchGate
Unlike many of his predecessors, Al-Farabi did not just theorize; he was a skilled performer on the lute (oud). This practical experience allowed him to correct the theoretical errors of earlier Greek texts, specifically those by Ptolemy and Aristoxenus, by testing their mathematical ratios against actual human hearing and instrumental performance. Key Themes in the Great Book of Music kitab almusiqa alkabir english pdf link
Most of the "links" circulating on forums and social media lead to one of three things: The work was so significant it was translated
For those looking for the source text to use with translation tools, a complete scan is available on the Internet Archive . Key Themes in the Great Book of Music