How does a chord progression impact a piece of music?

A chord progression plays a crucial role in shaping the overall harmonic structure of a piece of music, serving as the backbone upon which melodies and additional elements are built. It provides a framework for harmonic movement, guiding the listener through a series of tensions and resolutions that can evoke various emotions.

For example, major chords can create a sense of happiness or brightness, while minor chords may evoke sadness or introspection. Different chord progressions can also enhance or change the emotional context of a song, creating a specific atmosphere or mood that complements the lyrical content and overall theme. This is why option B is the correct choice, as it accurately highlights the importance of chord progressions in defining both the harmonic structure and the emotional quality of music.