Book Commentary on Ptolemy's Harmonics A scholarly edition of Porphyry's commentary on Ptolemy's treatise on musical theory and harmonics. ← Neoplatonism AuthorIngemar During TypeBook Written1932 Edition1932 PublisherGöteborgs Högskolas Årsskrift XXXVIII (1932:2), Göteborg LanguageGreek Tradition Neoplatonism Where to find it The Classical Review (Cambridge Core) — J. F. Mountford review of Düring, Porphyrios Kommentar zur Harmonielehre des Ptolemaios (1932) DOI for the Classical Review review of Düring's 1932 edition