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The pattern of this song, in the Aeolian mode, is A, A, A, B. Unity is secured by the three-fold appearance of the first phrase; and a certain balance, by having the second phrase B twice as long (four measures) as A.

THE SHIP IN DISTRESS

Old English

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The formula of this characteristic song in the Dorian mode is A, A, B, A; merely an extension, through repetition, of the simple type A, B, A which, in turn, is the basis of the fundamental structure known as the three-part form. This will later be studied in detail. It is evident to the musical sense how complete a feeling of coherence is gained by the return to A after the intervening contrast of the phrase B; evident, also, that this song is a perfect example of the principle of unity combined with variety.

We further cite a few examples from Scottish, Irish, French, Hungarian and Russian sources. They all illustrate quaint melodic intervals and an instinct for balance and symmetry.