3B D♭ major

3B is the code for D♭ major on the 1A–12B key wheel used by DJ software. Rekordbox's classic notation shows it as Db, and Traktor's Open Key notation as 8d. It is also spelled C♯ major.

1A2A3A4A5A6A7A8A9A10A11A12A1B2B3B4B5B6B7B8B9B10B11B12B3BDb

Notes

The D♭ major scale is made of these seven notes:

  1. 1D♭
  2. 2E♭
  3. 3F
  4. 4G♭
  5. 5A♭
  6. 6B♭
  7. 7C

Spelled as C♯ major: C♯ D♯ E♯ F♯ G♯ A♯ B♯

CFD♭E♭G♭A♭B♭

Check your track against this key by ear: the scale and tonic chord are synthesized in your browser.

Chords in the key

Triads built from the scale's own notes. In production and mashups, these chords fit the key.

  1. ID♭
  2. iiE♭m
  3. iiiFm
  4. IVG♭
  5. VA♭
  6. viB♭m
  7. vii°Cdim

Compatible moves

While a track in 3B is playing, moving to these keys sounds harmonic. The more notes two keys share, the smoother the blend.

MoveKeyShared notesWhen to use it
Same key 3B D♭ major 7/7 The safest move. Two tracks can play over each other for a long time.
Relative key 3A B♭ minor 7/7 The same seven notes; moves from major to minor and darkens the mood.
One step up (+1) 4B A♭ major 6/7 A fifth up. Raises the energy a notch; only one note differs.
One step down (−1) 2B F♯ major 6/7 A fifth down. Lowers the energy slightly and relaxes; only one note differs.
Diagonal move 2A E♭ minor 6/7 −1 and switch letter: from major to the previous minor. Only one note differs.
Two steps up (+2) 5B E♭ major 5/7 A whole tone up; a clear energy lift. Needs a short, clean transition.
Semitone up (+7) 10B D major 2/7 The well-known “energy boost”. Few shared notes, so use it for a quick transition without vocals.
Parallel key 12A C♯ minor 4/7 Same root note, other mode. The mood changes noticeably; use with care.

When you change the pitch

With key lock off, changing the pitch also shifts 3B. About 6% equals one semitone; values in between land between two keys and sound out of tune.

PitchSemitonesResulting key
-8% -1.44 ≈ 8B C major between keys
-6% -1.07 8B C major
-4% -0.71 ≈ 8B C major between keys
-2% -0.35 ≈ 3B D♭ major between keys
+2% +0.34 ≈ 3B D♭ major between keys
+4% +0.68 ≈ 10B D major between keys
+6% +1.01 10B D major
+8% +1.33 ≈ 10B D major between keys

Notations

CrateKeys · Rekordbox (alphanumeric)
3B
Camelot® (Mixed In Key)
3B
Open Key (Traktor)
8d
Classic (Rekordbox)
Db
Key name
D flat major
Enharmonic spelling
C♯ major

Neighboring keys

All keys

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