 In the Enumeration of the Sciences al-Fârâbî first focuses on language, grammar, metrics, etc. His Kitâb al-Hurûf (Book of Letters) or Particles, gives us much information on his views on language. Muhsin Mahdi, who published the first edition of this text in 1969a based on a single manuscript, later on found two other manuscripts but could not complete a new edition. Making use of the new material already gathered by Mahdi, Charles Butterworth has prepared a second edition with facing full English translation to be published by Cornell University Press. Muhammad Ali Khalidi gave a partial English translation covering the middle section (2005).  Thérèse-Anne Druart (2010) began studying al-Fârâbî’s innovative views of language. In Freiburg-im-Brisgau Nadja Germann (2015-16) and her team have been working on language and logic in classical Arabic and are more and more impressed by the sophistication of al-Fârâbî’s positions. As for al-Fârâbî, music is at the service of speech, the last section of the Great Book of Music explains how technically to fit music to speech, i.e., poetry, in order to enhance the meaning of a text. Azza Abd al-Hamid Madian’s 1992 Ph. D. dissertation for Cornell University, Language-music relationships in al-Fârâbî’s “Grand Book of Music”, includes an English translation of this section.