The general conviction that the true nature of ancient Greek music is practically incomprehensible in modern times arises from many causes, of which the most potent are:—
1. That hitherto all explanations have been based on the extant formal treatises, which deal either with the decadent elaborations of solo cithara-playing, or the purely theoretical calculations of the self-styled Pythagorean school, which latter professedly despised the actual performance of music.
2. The attempts to elucidate the subject make no allowance for the fact that the extant specimens of noted music extend over a period of at least eight centuries, and no one explanation is likely to fit either the whole of these or the casual references to music to be found in general Greek literature.
3. Thanks mainly to Aristoxenus, the modern mind has become so permeated by the quarter-tone theory of the enharmonic genus, that even so simple a record as the celebrated Euripides fragment has been generally interpreted as involving this minute interval. The arguments against this theory, at least as regards vocal music, are weighty and almost conclusive; but their full development requires more space than is available here.