Final answer:
In the second movement of Haydn's String Quartet in C Major, op. 76, no. 3, Haydn changes the melody when phrase A repeats by introducing variations and embellishments.
Step-by-step explanation:
In the second movement of Haydn's String Quartet in C Major, op. 76, no. 3, Haydn changes the melody when phrase A repeats by introducing variations and embellishments.
For example, he may alter the rhythm, add decorative ornaments, or change the dynamics in order to create interest and variation.
This helps to keep the repeated section engaging and prevents it from becoming monotonous.