The tones bracketed _b_ and _d_ do not admit of being struck simultaneously, it is true, but they are all parts of the same key (F minor), and are closely and smoothly connected; hence their concurrence, though not one of harmony (chord), is one of intimate tone relation and proximity.

Further, the whole group marked 2 corresponds in its linear formation, its rising, poising and curling, exactly to the preceding group, marked 1.

This, then, is a _good_ melody,--tuneful, interesting, intelligible, striking and absolutely definite.
In the second place, the tones and groups in a good melody are measured with reference to harmony of time-values; that is, their metric condition, and their rhythmic arrangement, corroborate the natural laws already defined:--uniformity of fundamental pulse, uniform recurrence of accent, and sufficient regularity of rhythmic figure to insure a distinct and comprehensible total impression.

This also may be verified in the time-values of Ex.5.

Scrutinize also, the melodic and rhythmic conditions of Exs.