Title: Risālat Ibn al-Munajjim fī al-mūsīqá wa-kashf rumūz Kitāb al-aghānī
Subjects: Arabic Music, History and criticism
People: Abū al-Faraj al-Iṣbahānī (897 or 8-967), Yaḥyá ibn ʻAlī Ibn al-Munajjim (855-912)