It is in a single-part form.

• a (measures 1-8)
• a1 (measures 9-16)

The key is G major, and the two motives in the opening theme—a descending one-octave scale and two staccato quarter notes—express the smooth gliding of new roller skates and the joy of the person using them.

In both phrases, the first four measures feature a descending one-octave scale, while the latter four measures employ a motive that ascends to a fifth and stops on a quarter note. Since the latter four measures begin piano with an ascending line, a change in nuance is desired here.