What Key Is 4B? A♭ major

Key & Harmony

4BA♭ major

Match 4B against the compatible keys below on the Camelot wheel, then verify the key in your own library before you blend.

Musical key: A♭ major
Open key: 9d
Mode: Major · brighter
Compatible keys: 3B · 5B · 4A
Relative minor: 4A · F minor
Tracks shown: 13
Wheel position: 4 o'clock
Evidence: Reviewed

Camelot compatibility is deterministic music theory; track counts and key tags still depend on the analysis source and exact edit.

Quick answer

What key is 4B on the Camelot wheel?

A harmonic mixing guide for 4B: its 3 compatible keys with the energy direction of each move, reference tracks in A♭ major, and how to plan transitions on the Camelot wheel.

4B is A♭ major, written as 9d in Open Key notation. It is a major key and mixes harmonically with 3B (D♭ major) for an energy drop, 5B (E♭ major) for an energy boost, 4A (F minor) for a mood swap.

DJ-ready reference
Printable
Methodology included

Compatible Keys

Keys That Mix With 4B

This Key

A♭ major

Open Key 9d

Energy Drop

D♭ major

Open Key 8d

Subtle pull-back for outros or warmups.

Energy Boost

E♭ major

Open Key 10d

Forward lift, usually the most-used adjacent move.

Mood Swap

F minor

Open Key 9m

Same notes, flipped mode, fresh emotional color.

Reference tracks

Tracks in 4B (A♭ major), by Genre

Every track is verified against its beatgrid, with its real BPM, energy and length. Click any row to open its full sonic profile.

#TrackKeyBPMNRGLenKey·BPM

Melodic Techno

2 tracks

Solar Detroit (12 Inch Mix)

Maceo Plex · 2015 · Tech House · Techno

4B121738:574B121

Boavista

Stephan Bodzin

124647:37124

Dubstep

2 tracks

Firepower

Datsik

140835:10140

Where's My Money - Caspa Remix

TC, Caspa

140814:58140

Other genres

9 tracks

An Ending (Ascent) - Remastered 2019

Brian Eno

71114:2571

Les Nuits

Nightmares On Wax

95356:2195

DVNO

Justice, DVNO

120953:56120

Loco

Justin Quiles, Chimbala, Zion & Lennox

128903:52128

Fill Me In

Craig David

132744:17132

A Little Bit Of Luck

DJ Luck & MC Neat

135405:50135

Everytime We Touch

Cascada

142983:17142

Coolio - Darwish Remix

Astrix, Darwish

144886:40144

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Why These Keys Work Together

The three compatibility moves on the Camelot wheel aren't arbitrary — they reflect real music theory. Adjacent keys (number ±1, same letter) share six of seven notes, which is why melodies ride over the boundary without clashing. The opposite-letter same-number move is the relative major/minor — those two keys share all seven notes, only the tonal center shifts. That's why mood-swap transitions feel jarring in mood but never harmonically wrong: the underlying scale is identical.

How to Use 4B in a Mix

Hear it in real sets
Browse every 4B track in the directory and the DJs who play in A♭ major.
Visualize the wheel
Build sets that move through the wheel rather than jumping randomly with the interactive Camelot wheel.
Convert any key
When in doubt about a track's key, run it through the DJ key chart to translate between Camelot, Open Key, and standard musical notation.
See the full compatibility grid
The harmonic mixing chart lays out every key relationship at a glance.
Print a cheat sheet
The Camelot wheel cheat sheet is printable for offline use.
Read the theory
Go deeper with our harmonic mixing guide.

4B in the Vibes Directory

Beyond the theory, hear 4B in real catalogues: browse every 4B track in the directory (A♭ major), all harmonically compatible and filterable by tempo, energy, and genre. These directory artists play in A♭ major:

12th Planet 16BL 1788-L 1991 8Kays A.M.C Above & Beyond AC Slater Ace Ventura Acid Pauli ACRAZE Adam Beyer

Hey, it's Ben Modigell 👋

I've been DJing and producing music as "so I so," focusing on downtempo, minimal, dub house, tech house, and techno. My background in digital marketing, web development, and UX design over the past 6 years helps me create DJ tutorials that are clear, practical, and easy to follow.

DJingMusic ProductionTech HouseMinimal HouseDigital MarketingWeb DevelopmentUX Design

Methodology

Last updated May 11, 2026

Author and Methodology

Maintained by Ben Modigell, founder of Vibes. Ben builds DJ library, preparation, BPM, and harmonic-mixing tools for working DJs.

Data used: 391-track reference snapshot; this page filters the 13 entries tagged 4B (A♭ major).
Source: Audio features sourced from ReccoBeats (https://reccobeats.com); track metadata via Spotify Search API. Spotify deprecated audio-features for new apps in Nov 2024. Manual label reference tracks use Beatport BPM/key metadata where available.
Evidence: 13 reference tracks in the current snapshot are tagged 4B. BPM/key values come from ReccoBeats audio features and track metadata is resolved through Spotify.
How this page is made: Camelot key pages are generated from deterministic Camelot/Open Key mappings, harmonic-mixing rules, and a ReccoBeats/Spotify reference track snapshot. AI is not used to calculate key compatibility.

Camelot compatibility is deterministic music theory; track keys still depend on the analysis engine and the specific edit or remaster.

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Frequently Asked Questions

4B is A♭ major. In Open Key notation it's written as 9d. It's a major key: typically brighter and more uplifting in feel.

4B translates to 9d in the Open Key (also called Open Key Notation) system. The "d" suffix marks major mode.

The relative minor of 4B (A♭ major) is 4A (F minor). They share the same number on the Camelot wheel and switch between major and minor without changing notes, making them perfect for "mood swap" transitions.

In the reference tracks shown on this site, A♭ major (4B) shows up most often in: Melodic Techno, Dubstep, Ambient. Major keys like this one are common in uplifting trance, future house, and pop-leaning electronic: anything bright and crowd-friendly.

Three keys mix smoothly with 4B: 3B (D♭ major) for an energy drop, 5B (E♭ major) for an energy boost, and 4A (F minor) for a mood swap (relative minor). These are the canonical Camelot harmonic-mixing relationships.

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