and a cowardly soul by troubles identical and equal, are the postures and utterances that result in the two cases similar?

How could they be, when even their complexions differ in color?

Well said, my friend. But in, fact, while postures and tunes do exist in music,“Music” comprises both dance and song (including instrumental accompaniment), whether executed by single performers or by groups (χορεία). The “postures” are those of the dancer, the “tunes” those of the singer. which deals with rhythm and harmony, so that one can rightly speak of a tune or posture being “rhythmical” or “harmonious,” one cannot rightly apply the choir masters metaphor “well-colored” to tune and posture; but one can use this language about the posture and tune of the brave man and the coward,