[Illustration: Example 48. Fragment of Mozart.]
The Antecedent is a regular four-measure phrase, with semicadence (made on the tonic chord, but with 3d as uppermost tone); the Consequent is a six-measure phrase, with perfect cadence, and is repeated, with partial change of register. The whole is a "period with repeated Consequent."
A somewhat elaborate example of extension by detail-repetition is seen in the following (Chopin, Mazurka No. 20, op. 30, No. 3—see the original):
