C7sus2 chord
C dominant seventh suspended second
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The C7sus2 chord has the intervals I, II, V, vii. The seventh suspended second chord is a variation of the suspended second chord, meaning that it does not have a third and sounds open. This chord can be used to prepare for a resolution up toward a third.
Matching Scales: C Minor C Mixolydian C Dorian D Minor D Phrygian D Locrian G Minor G Blues G Minor Pentatonic A# Major