B1 by Ansome cover art

30s preview

Key
9A · E minor
BPM
129
Open Key
2m
Energy
81/100
Pop
0/100
Length
7:06
Released
2017
Album
SLAM001
Genre
Techno
Loudness
-9.7 dB
Dynamics
8.7 dB
ISRC
GBLV61704774

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

B1 is a peak-time tempo techno track in E minor (9A) at 129 BPM. The mix is almost entirely instrumental. Its spectrum is weighted to the sub and kick, with a heavy low end. A 2017 production that still circulates in sets. More underground than 99% of Ansome's catalogue.

Low end:
more bass-heavy than 98% of Ansome's catalogue
Brightness:
brighter than 93% of Ansome's catalogue
Energy:
calmer than 90% of Ansome's catalogue

Sonic profile

EnergyGrooveMoodOrganicInstr.LiveTempo
Energy81
Mood33Dark
Groove46
Acoustic0
Instrumental89
Live8
Speech9

Frequency spectrum

amplitude · bass → treble

601252505001k2k4k8k
46%
Low
30-130 Hz
33%
Low-mid
130-570 Hz
18%
Upper-mid
570 Hz-2.5 kHz
3%
High
2.5-11 kHz

FAQ

What key is B1 in?

B1 by Ansome is in E minor, or 9A on the Camelot wheel.

What BPM is B1?

B1 runs at 129 BPM, a peak-time tempo track.

What mixes well with B1?

From 9A it blends harmonically with 10A, 9B, 8A. Moving to 10A lifts the energy a step.

Is B1 good for peak time?

With energy 81 out of 100 at 129 BPM, it works best as a peak-time weapon.

Mixes harmonically

9A8A · 10A · 9B

From 9A, 10A (B minor) lifts the energy a step; 9B (G major) brightens to the relative major; 8A (A minor) cools the energy down a step.

Every move from 9A

10ASimple Mix Upper
8ASimple Mix Downer
9BTonal Shift·
10BDiagonal Mix Upper
8BDiagonal Mix Downer
6BCompatible Tone·
11AHigh Energy Boost▲▲▲
7AHigh Energy Drain▼▼▼
12AParallel Key Upper▲▲
6AParallel Key Downer▼▼
4ATritone Jump▲▲
1ARelated Keyrisky

How to mix it

In 9A at 129 BPM: 10A (B minor) — move to 10A to push the floor harder; 9B (G major) — switch to 9B for a mood change without losing the groove; 8A (A minor) — drop to 8A to bring the room down gently.

Pitch range at ±6%: 121-137 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 4A rather than 9A; below -5% it reads as 2A. With key lock on, it stays 9A across the whole range.

Programming: a peak-time weapon — save it for the main stretch (energy 81/100).

Similar tempo

Within ±3 BPM of 129 — beatmatch without a big tempo pull.

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Other recommendations

Beyond strict key and genre matches: tracks that still sit in beatmatch range of 129 BPM with a compatible energy and groove — candidates for a key jump or a genre crossover.

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