The C chord is one of the most fundamental chords in music, particularly in guitar and piano playing. It consists of three notes: C, E, and G. When played together, these notes create a harmonious sound that forms the basis for many songs across various genres. To play the C chord on the guitar, you typically place your fingers on the first fret of the B string, the second fret of the D string, and the third fret of the A string. On the piano, you can play the C chord by pressing the C, E, and G keys simultaneously.