The main key is G major. After a 16-bar binary-form large period begins, its variations follow.

• A [a (bars 1-8) + b (bars 9-16)]
• Variation [a1 (bars 17-24) + b1 (bars 25-32)]

The theme begins with a broadly ascending melody based on the tonic chord over the first two bars, then gently descends from bars 3-4, leading to a half cadence. As the work's title suggests, it evokes a cheerful and tranquil spring. In the variation, the use of eighth-note runs creates a more lively expression.