What are chords in music?

Chords in music are defined as combinations of notes played together simultaneously. This definition highlights the fundamental aspect of chords: they are not just isolated tones but rather the harmonic blending of multiple notes, which creates richness and depth in musical compositions. The simultaneous sound of these notes can evoke various emotions and help to establish the key and mood of a piece, making them a crucial element in music theory and songwriting.

In contrast, alternative choices describe different musical elements. Complex rhythms refer to patterns of beats over time rather than harmonic structure. Single musical notes are the foundation of melodies but do not capture the essence of harmony that chords create. Solo performances indicate the act of playing solo without ensemble support, which does not directly relate to the definition of chords. The emphasis on simultaneous notes distinguishes chords as a vital concept in understanding music's harmonic framework.