C7-9 (C7b9) altered chord

Altered C chord for piano presented by keyboard diagrams.
Explanation: The C7-9 alter the C9 by the change of one note. The chord name can also be written as C7b9 or C7(b9).
Theory: The C7-9 are identical with the C9 except that the major ninth is flattenedThe tone is one half step lower.

C7-9

C7-9 chord diagram
Notes: C - E - G - Bb - Db

B7-9 chord ‹ Previous • Next › C#7-9 chord

See also C7+9 chord ›

C chord categories

C Cm C7 Cm7 Cmaj7 CmM7 C6 Cm6 C6/9 C5 C9 Cm9 Cmaj9 C11 Cm11 Cmaj11 C13 Cm13 Cmaj13 Cadd C7-5 C7+5 Csus Cdim Cdim7 Cm7b5 Caug Caug7