[Illustration: Phrase group diagram.]
Observe that the classification depends upon the number of phrases,—upon the melodic identity of the phrases,—and upon the quality of the cadences.
No. 1 is illustrated in Ex. 15; No. 2, in Ex. 42 and the first four measures of Ex. 43 (cadence not perfect, it is true, but same phrase-melody and same cadence); No. 3 is seen in Ex. 44 (phrase-melody similar, but cadences different)—also in Ex. 47; No. 4 is seen in Ex. 48; No. 5 is rare, but an example will be discovered in Lesson 8; No. 6 is illustrated in the following (Grieg, op. 38, No. 2):—
