The D♯ Note
D♯ is a black key, immediately next to D. It sounds at 311.13 Hz in octave 4.
D♯ on the piano
Key facts
- On the keyboard
- a black key, immediately next to D.
- Frequency (octave 4)
- 311.13 Hz
- MIDI number (octave 4)
- 63
- Also written as
- E♭
- In key signatures
- The 4 sharp in the order of sharps.
D♯ and its enharmonic spellings
D♯ can also be written as E♭. 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 | 27 | 38.89 Hz |
| D♯2 | 39 | 77.78 Hz |
| D♯3 | 51 | 155.56 Hz |
| D♯4 | 63 | 311.13 Hz |
| D♯5 | 75 | 622.25 Hz |
| D♯6 | 87 | 1244.51 Hz |
| D♯7 | 99 | 2489.02 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
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Where is D♯ on the piano?
D♯ is a black key, immediately next to D.
What frequency is D♯4?
D♯4 sounds at 311.13 Hz with A4 tuned to 440 Hz.
What is another name for D♯?
D♯ can also be written as E♭. They are the same pitch spelled differently.
