Envelopes by Fer BR cover art

Envelopes

Fer BR

30s preview

Key
3B · D♭ major
BPM
123
Open Key
8d
Energy
40/100
Pop
0/100
Length
7:25
Released
2014
Genre
Techno
Label
M_nus
Loudness
-12.5 dB
Dynamics
9.4 dB
ISRC
CAM261450547

Key, BPM and audio features: model-based audio analysis · how we measure · catalogue updated July 2026

A club-tempo techno cut, Envelopes sits in D♭ major (3B) at 123 BPM. It reads as dark and steady. Rhythmically it is built for the dancefloor. The mix is almost entirely instrumental. Its spectrum is weighted to the sub and kick, with a heavy low end. The master keeps real dynamic headroom. A 2014 production that still circulates in sets. Calmer than 99% of Fer BR's catalogue. In a set it works best as a warm-up or breakdown cut.

Reach:
more underground than 99% of Fer BR's catalogue
Tempo:
slower than 98% of Fer BR's catalogue
Low end:
more bass-heavy than 96% of Fer BR's catalogue

Sonic profile

EnergyGrooveMoodOrganicInstr.LiveTempo
Energy40
Mood20Dark
Groove84
Acoustic5
Instrumental92
Live11
Speech11

Frequency spectrum

amplitude · bass → treble

601252505001k2k4k8k
47%
Low
30-130 Hz
28%
Low-mid
130-570 Hz
13%
Upper-mid
570 Hz-2.5 kHz
13%
High
2.5-11 kHz

FAQ

What key is Envelopes in?

Envelopes by Fer BR is in D♭ major, or 3B on the Camelot wheel.

What BPM is Envelopes?

Envelopes runs at 123 BPM, a club-tempo track.

What mixes well with Envelopes?

From 3B it blends harmonically with 4B, 3A, 2B. Moving to 4B lifts the energy a step.

Is Envelopes good for peak time?

With energy 40 out of 100 at 123 BPM, it works best as a warm-up or breakdown cut.

Mixes harmonically

3B2B · 4B · 3A

From 3B, 4B (A♭ major) lifts the energy a step; 3A (B♭ minor) settles into the relative minor; 2B (F♯ major) cools the energy down a step.

#Track

Every move from 3B

4BSimple Mix Upper
2BSimple Mix Downer
3ATonal Shift·
4ADiagonal Mix Upper
2ADiagonal Mix Downer
6ACompatible Tone·
5BHigh Energy Boost▲▲▲
1BHigh Energy Drain▼▼▼
6BParallel Key Upper▲▲
12BParallel Key Downer▼▼
10BTritone Jump▲▲
7BRelated Keyrisky

How to mix it

In 3B at 123 BPM: 4B (A♭ major) — move to 4B to push the floor harder; 3A (B♭ minor) — switch to 3A for a mood change without losing the groove; 2B (F♯ major) — drop to 2B to bring the room down gently.

Pitch range at ±6%: 116-130 BPM — anything in that window beatmatches without sounding stretched.

Key on the fader: without key lock (Master Tempo on CDJs), above roughly +5% it plays a semitone higher, so treat it as 10B rather than 3B; below -5% it reads as 8B. With key lock on, it stays 3B across the whole range.

Programming: a warm-up or breakdown cut — early set or after a peak to reset the room.

Similar tempo

Within ±3 BPM of 123 — beatmatch without a big tempo pull.

#Track

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Full profile
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Other recommendations

Beyond strict key and genre matches: tracks that still sit in beatmatch range of 123 BPM with a compatible energy and groove — candidates for a key jump or a genre crossover.

#Track