What is the overall effect of a musical piece following the "arch form" structure?

The overall effect of a musical piece following the "arch form" structure is structured and symmetrical. Arch form is characterized by a design where the first section mirrors the last section, and the middle section contrasts with them. This creates a sense of balance and cohesion within the music, as listeners can easily recognize how the two outer sections relate to one another while experiencing a different emotional or musical landscape in the center.

This symmetry often enhances the listening experience, allowing for a clear musical narrative that can evoke a sense of completion and unity. The structured nature of the arch form leads to a satisfying resolution as the music returns to its initial themes after exploring different ideas in the central section.