The main key is A minor, and it is in compound binary form.

• A[a (measures 1-4) + a1 (measures 5-8) + b (measures 9-12) + a (measures 13-16)]
• B[c (measures 17-20) + c1 (measures 21-24) + a (measures 25-28) + a1 (measures 29-32)]

While the above considers four measures as a phrase, it can also be broadly interpreted as A[a (measures 1-8) + b (measures 9-16)] B[c (measures 17-24) + a (measures 25-32)]. However, since the piece progresses strictly in four-measure units, we believe that the compound binary form based on four-measure phrases is more accurate to the actual structure.

The opening of the theme begins with a monophonic melody, and the way the tension builds towards an augmented sixth chord is reminiscent of Wagner's Liebestod. For a brief period from measures 17 to 20, it modulates to the relative major, C major, and then partially modulates to its dominant, G major. Sections b and c share structural similarities, and c can be regarded as a development of b.