Charles Avison's Essay on Musical Expression, first published in 1752, is a major contribution to the debate on musical aesthetics which developed in the course of the 18th century. Considered by Charles Burney as the first essay devoted to 'musical criticism' proper, it established the primary importance of 'expression' and reconsidered the relative importance of harmony and melody. Immediately after its publication it was followed by William Hayes's Remarks (1753), to which Avison himself retorted in his Reply. Taken together these three texts offer a fascinating insight into the debate...