Aristotle [x]-xii (Preface), [15], [34], [35], [39], [40], [48], [71], [75], [139], [153], [155], [163], [165], [166], [168], [171], [176], [189], [214], [246], [247], [248], [249], [254], [255], [268], [290], [291], [292], [301], [308], [309], [310], [312], [313], [315], [316], [318], [319], [320], [325], [329], [334], [336], [337], [340], passim

Aristoxenus [42], [43], [48], [125], [138], [168], [287], [318]

Arnold, Matthew [26], [158], [167], [278]

Arrian [186], [187]

Article [70], [289]

Aspirates [149], [294], [350]

Athenaeus [148], etc.

Auctor ad Herennium [316]

Audiences, their sensitiveness to the music of sounds [40], [120] ff.

Austere composition or harmony [210] ff.