C add chords
C add chords for piano with keyboard diagram.
Explanation: The Cadd9 and Cadd2 are four-note chords. Cadd2 is sometimes written as C2.
Theory: Both chords contain the same notes, but the added notes belong to different octaves which are the ninth and the second notes in the scale.
Cadd9
Notes: C - E - G - D
Left hand: 5-3-2-1
Right hand: 1-2-3-5
Cadd2
Notes: C - D - E - G
Left hand: 5-4-3-1
Right hand: 1-2-3-5
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See also Cadd11 chord ›