C sus chords
C sus chords for piano (sus4 and sus2) with keyboard diagram.
Explanation: The Csus4 and Csus2 are three note chords. Csus2 is sometimes written as C2.
Theory: In these chords the third (the second note in the chord) are being replaced with either a major second or a perfect four. The sus4 chord includes a perfect four and the sus2 chord includes a major second.
Notes: C - F - G
Notes: C - D - G