What does the term "harmonic set" refer to?

The term "harmonic set" refers to a series of frequencies associated with fundamental frequencies, which is why this choice is the correct answer. In music theory, the harmonic set is comprised of overtones or harmonics that occur above a fundamental pitch, creating the rich tapestry of sound we hear. These harmonics follow a specific mathematical relationship, often being integer multiples of the fundamental frequency.

Understanding harmonics is essential for grasping how different sounds blend and interact, which is crucial for composition and analysis in both Western and non-Western music traditions. This knowledge is foundational in studying how instruments produce sound and how chords are constructed, providing a deeper insight into the complexities of music theory.

In contrast, the other options refer to different music concepts that do not align with the definition of "harmonic set." A collection of rhythms pertains to rhythm and meter, dynamics relate to the loudness or softness of sound, and musical genres categorize styles of music rather than the frequency relationships intrinsic to harmonics.