Name the three sections of Cuckoo Waltz

Name the three sections of the Cuckoo Waltz. According to relevant information, the whole song "Cuckoo Waltz" adopts the three-beat waltz genre and consists of three small waltzes. The first section takes the cuckoo's call as the core and is developed using repetition, variation and other techniques. With a brisk, lively rhythm and fresh, smooth melody, it depicts a vibrant scene.