C#7#5 chord
C# augmented 7th · also written Db7#5
C4
C#
E#
A
B
C5
Want it in context? Open C#7#5 on the full piano.
Notes
- C#R
- E#3
- A#5
- Bb7
Formula: R – 3 – #5 – b7
C#7#5 inversions
The same notes, with a different note in the bass.
Root position C#7#5
C4
C#
E#
A
B
C5
1st inversion C#7#5/E#
C4
E#
A
B
C5
C#
2nd inversion C#7#5/A
C4
A
B
C5
C#
E#
3rd inversion C#7#5/B
C4
B
C5
C#
E#
A
More C# chords
Augmented 7th chords in other keys
FAQ
What notes are in the C#7#5 chord?
The C# augmented 7th chord (C#7#5) has 4 notes: C#, E#, A and B.
How do you play C#7#5 on the piano?
Put your right hand on C#, E#, A and B, starting from C#. A common fingering for three-note chords is thumb (1), middle finger (3) and little finger (5).
What is the formula of a augmented 7th chord?
R – 3 – #5 – b7 (in semitones from the root: 0, 4, 8, 10).
Is C#7#5 the same as Db7#5?
Yes. C# and Db are the same key on the piano (enharmonic), so C#7#5 and Db7#5 sound the same.