C#7-9 (C#7b9) altered chord

Altered C# chord for piano presented by keyboard diagrams.
Explanation: The C#7-9 alter the C#9 by the change of one note. The chord name can also be written as C#7b9 or C#7(b9).
Theory: The C#7-9 are identical with the C#9 except that the major ninth is flattenedThe tone is one half step lower.

C#7-9

C#7-9 chord diagram
Notes: C# - F - G# - B - D / C# - E# - G# - B - D

C7-9 chord ‹ Previous • Next › D7-9 chord

See also C#7+9 chord ›

C# chord categories

C# C#m C#7 C#m7 C#maj7 C#mM7 C#6 C#m6 C#6/9 C#5 C#9 C#m9 C#maj9 C#11 C#m11 C#13 C#m13 C#add C#7-5 C#7+5 C#sus C#dim C#dim7 C#m7b5 C#aug C#aug7