The D♭ Note
D♭ is a black key, immediately next to D. It sounds at 277.18 Hz in octave 4.
D♭ on the piano
Key facts
- On the keyboard
- a black key, immediately next to D.
- Frequency (octave 4)
- 277.18 Hz
- MIDI number (octave 4)
- 61
- Also written as
- C♯
- In key signatures
- The 4 flat in the order of flats.
D♭ and its enharmonic spellings
D♭ can also be written as C♯. These are enharmonic equivalents: the same pitch, the same key on the piano, a different name on the page. Which spelling is correct depends on the key and on how the note functions, not on the sound.
D♭ frequency in every octave
Frequencies for D♭ in scientific pitch notation, with A4 tuned to 440 Hz.
| Note | MIDI | Frequency |
|---|---|---|
| D♭1 | 25 | 34.65 Hz |
| D♭2 | 37 | 69.3 Hz |
| D♭3 | 49 | 138.59 Hz |
| D♭4 | 61 | 277.18 Hz |
| D♭5 | 73 | 554.37 Hz |
| D♭6 | 85 | 1108.73 Hz |
| D♭7 | 97 | 2217.46 Hz |
Chords on D♭
The most common chords built with D♭ as the root.
Scales starting on D♭
Keys and scales that use D♭ as their tonic.
All notes
الأسئلة الشائعة
Where is D♭ on the piano?
D♭ is a black key, immediately next to D.
What frequency is D♭4?
D♭4 sounds at 277.18 Hz with A4 tuned to 440 Hz.
What is another name for D♭?
D♭ can also be written as C♯. They are the same pitch spelled differently.
