What is a chord?

A chord is defined as a combination of two or more notes sounded together. This definition highlights the essence of harmony in music, which occurs when different pitches are played simultaneously to create a fuller sound. Chords serve as the foundation for much of Western music, providing the harmonic context that underpins melodies and influences the emotional and structural aspects of a piece.

In contrast, a single musical note refers to just one pitch, which does not constitute a chord. A visual representation of music could refer to sheet music or some form of notation, which is not inherently related to the auditory concept of a chord. Lastly, a rhythm played in sync with a melody pertains to timing and the sequencing of notes, rather than the simultaneous combination of pitches that defines a chord. Therefore, understanding what a chord is allows musicians to explore more complex harmonic relationships in their compositions and performances.