Which term refers to the use of a single tonal center in a piece of music?

The correct answer focuses on homophony, which is characterized by the presence of a single melodic line supported by chords or harmonies that provide context and depth without competing melodic lines. In a homophonic texture, all voices or instruments work together to emphasize a primary melody, creating a clear tonal center around which the other elements revolve.

This structure is typical in much of Western classical music, especially in the context of harmony-driven compositions. The use of a single tonal center allows for a cohesive and unified listening experience, making it easier for the audience to follow the main theme or idea of the piece.

In contrast, monophony involves a single melodic line without any harmonic support, polyphony consists of multiple independent melodies occurring simultaneously, and atonality refers to music that lacks a clear tonal center altogether. Each of these terms represents different musical textures and organizational principles, but homophony specifically highlights the importance of a single tonal focus supported by harmonic content.