A Grazioso Development
The second movement of my Sonata for Oboe and Piano, marked Andante grazioso, is in ABA form. The middle B section, however, is not truly new material; rather, it is more akin to a development, growing out of the A theme. The opening phrase of the A melody, presented by the oboe, is shown below. Notice in particular the center of the phrase, consisting of a three-note stepwise ascent, an upward leap, and a mirroring three-note stepwise descent. No doubt this symmetry is part of what gives this melody its grazioso (graceful) character.
Now compare the passage below from the B section, starting with the pickup to bar 31. Here the opening phrase, its center in inversion, and a partially inverted from of the center are all woven together into a dialogue between the piano and the oboe.
Few if any listeners will be analyzing these motivic relationships so formally as they hear the passage, but I believe the relationships are perceptible to the subconscious and enrich our experience of the music. Yes, the movement begins with a soulful and pleasing melody, but it is the further development of that material that transforms this music into art.
The passage shown starts around 2:30 in the video below.