What notes are in a C#7b9 chord?

C#7b9 is C#, E#, G#, B, D: the 1, 3, 5, ♭7, ♭9 of C#.

How do you play C#7b9 on guitar?

6th String Root: 9 11 9 10 9 10; 5th String Root: x 4 3 4 3 x; 4th String Root: x x 11 10 12 10 (low E to high E, x = don't play the string).

What scale goes with C#7b9?

Scales on C# that contain every note of C#7b9: C# Phrygian Dominant, C# Half-Whole Diminished, C# Phrygian b4, C# Mixolydian b2, C# Tritone.

Guitar chord · Dominant 7b9

C#7b9 chord (C# Dominant 7b9)

Dominant 7th with a flat 9th: dark and tense, and it often leads to a minor chord.

Notes C#E#G#BD

Formula 1 3 5 ♭7 ♭9

Shapes 3 on this page

C#7b9 chord shapes

Tap a diagram to strum it. Numbers are fingers: 1 index, 2 middle, 3 ring, 4 pinky. Blue dots are the root, C#.

6th String Root 9 11 9 10 9 10

5th String Root x 4 3 4 3 x

4th String Root x x 11 10 12 10

Interactive chord diagram

C#7b9 on the fretboard

STR OP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 E A D G B E ✕ ✕ ✕ ✕

Tap any note to hear it.

Scales to play over C#7b9

These scales start on C# and contain every note of the chord, so they fit when C#7b9 is the chord of the moment.

C# Phrygian Dominant C# Half-Whole Diminished C# Phrygian b4 C# Mixolydian b2 C# Tritone

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Practise C#7b9 and every other chord anywhere, even offline.

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Questions

What notes are in a C#7b9 chord?: C#7b9 is C#, E#, G#, B, D: the 1, 3, 5, ♭7, ♭9 of C#.
How do you play C#7b9 on guitar?: 6th String Root: 9 11 9 10 9 10; 5th String Root: x 4 3 4 3 x; 4th String Root: x x 11 10 12 10 (low E to high E, x = don't play the string).
What scale goes with C#7b9?: Scales on C# that contain every note of C#7b9: C# Phrygian Dominant, C# Half-Whole Diminished, C# Phrygian b4, C# Mixolydian b2, C# Tritone.

Dominant 7b9 chords in every key

C7b9 C#7b9 D7b9 Eb7b9 E7b9 F7b9 F#7b9 G7b9 Ab7b9 A7b9 Bb7b9 B7b9