Articles and Long Reads A Speculation in Theory and Practice, in Three Parts: I. The Eclipse of Melodic Formulae as Determinants of Mode in Western Liturgical Music, 850-1050 II. Tertium Quid III. Ebenezer Prout (1835-1909): Toward a Re-examination of His Ideas and Influence, with reference to the 16th Edition of Harmony: its Theory and Practice