A chord chart is a visual representation of the chords used in a song, typically displayed in a simple format. It shows the chord names above the lyrics or melody, allowing musicians to quickly understand which chords to play at specific points in the song. Chord charts are commonly used by guitarists, pianists, and other instrumentalists to accompany singers or other musicians. These charts can vary in complexity, from basic versions that include only the chord names to more detailed ones that may include chord diagrams or additional instructions. Chord charts are popular in genres like folk music, rock, and jazz, making them essential tools for both beginners and experienced musicians.