アイラ by Nobserv cover art

アイラ

Nobserv

30s preview

Key
4B · A♭ major
BPM
139
Open Key
9d
Energy
86/100
Pop
7/100
Length
2:58
Released
2025
Genre
Vocaloid
Loudness
-5.4 dB
Dynamics
11.6 dB
ISRC
GXD7G2519621

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

アイラ: driving up-tempo vocaloid, A♭ major (4B), 139 BPM. It is vocal-led. Its spectrum is weighted to the sub and kick, with a heavy low end. The master keeps unusual dynamic range for club music (crest 12 dB). More bass-heavy than 88% of Nobserv's catalogue. In a set it works best as a peak-time weapon.

Sonic profile

EnergyGrooveMoodOrganicInstr.LiveTempo
Energy86
Mood61Balanced
Groove59
Acoustic1
Instrumental0
Live14
Speech5

Frequency spectrum

amplitude · bass → treble

601252505001k2k4k8k
34%
Low
30-130 Hz
27%
Low-mid
130-570 Hz
23%
Upper-mid
570 Hz-2.5 kHz
16%
High
2.5-11 kHz

FAQ

What key is アイラ in?

アイラ by Nobserv is in A♭ major, or 4B on the Camelot wheel.

What BPM is アイラ?

アイラ runs at 139 BPM, a driving up-tempo track.

What mixes well with アイラ?

From 4B it blends harmonically with 5B, 4A, 3B. Moving to 5B lifts the energy a step.

Is アイラ good for peak time?

With energy 86 out of 100 at 139 BPM, it works best as a peak-time weapon.

Mixes harmonically

4B3B · 5B · 4A

From 4B, 5B (E♭ major) lifts the energy a step; 4A (F minor) settles into the relative minor; 3B (D♭ major) cools the energy down a step.

#Track

Every move from 4B

5BSimple Mix Upper
3BSimple Mix Downer
4ATonal Shift·
5ADiagonal Mix Upper
3ADiagonal Mix Downer
7ACompatible Tone·
6BHigh Energy Boost▲▲▲
2BHigh Energy Drain▼▼▼
7BParallel Key Upper▲▲
1BParallel Key Downer▼▼
11BTritone Jump▲▲
8BRelated Keyrisky

How to mix it

In 4B at 139 BPM: 5B (E♭ major) — move to 5B to push the floor harder; 4A (F minor) — switch to 4A for a mood change without losing the groove; 3B (D♭ major) — drop to 3B to bring the room down gently.

Pitch range at ±6%: 131-147 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 11B rather than 4B; below -5% it reads as 9B. With key lock on, it stays 4B across the whole range.

Programming: a peak-time weapon — save it for the main stretch (energy 86/100).

Similar tempo

Within ±3 BPM of 139 — beatmatch without a big tempo pull.

#Track

More vocaloid

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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 139 BPM with a compatible energy and groove — candidates for a key jump or a genre crossover.

#Track