C♯ half-diminished chord on piano
C♯m7♭5 · C♯ø7 — a diminished triad with a minor seventh: the ii chord of a minor key.
| Notes | C♯ – E – G – B |
|---|---|
| Formula | 1 – ♭3 – ♭5 – ♭7 |
| Symbols | C♯m7♭5, C♯ø7 |
| Fingering (root position) | Right hand 1 2 3 5 · Left hand 5 3 2 1 |
How to play C♯ half-diminished on the piano
Start on C♯. Add E, G, B. With the right hand use fingers 1 2 3 5; with the left hand 5 3 2 1. Press the keys together for the chord, or one after another for an arpeggio.
Inversions
The same notes in a different order: the lowest note changes, the chord stays C♯ half-diminished. Inversions let you move between chords with small steps.
Root position
C♯ – E – G – B · RH 1 2 3 5 · LH 5 3 2 1
1st inversion
E – G – B – C♯ · RH 1 2 3 5 · LH 5 3 2 1
2nd inversion
G – B – C♯ – E · RH 1 2 4 5 · LH 5 3 2 1
3rd inversion
B – C♯ – E – G · RH 1 2 3 5 · LH 5 4 2 1
Which keys use C♯ half-diminished
In these keys the chord is built from the notes of the scale itself:
Other C♯ chords
D♭ majorC♯ minorC♯ diminishedD♭ augmentedD♭ sus2D♭ sus4D♭6D♭7D♭ major seventhC♯ minor seventhC♯ diminished seventh
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