Hard Acid
30s preview
- Key
- 7A · D minor
- BPM
- 136
- Open Key
- 12m
- Energy
- 99/100
- Pop
- 6/100
- Length
- 7:43
- Released
- 2020
- Genre
- Techno
- Loudness
- -8.6 dB
- Dynamics
- 8.2 dB
- ISRC
- CA5KR2005480
Key, BPM and audio features: model-based audio analysis · how we measure · catalogue updated July 2026
At 136 BPM in D minor (7A), Hard Acid is a driving up-tempo techno production. The groove is strong and floor-ready. The mix is almost entirely instrumental. Its spectrum is weighted to the sub and kick, with a heavy low end. Darker than 94% of Charlie Sparks's catalogue.
- Tempo:
- slower than 77% of Charlie Sparks's catalogue
- Groove:
- groovier than 75% of Charlie Sparks's catalogue
Sonic profile
Frequency spectrum
amplitude · bass → treble
- 39%
- Low
- 30-130 Hz
- 30%
- Low-mid
- 130-570 Hz
- 19%
- Upper-mid
- 570 Hz-2.5 kHz
- 11%
- High
- 2.5-11 kHz
FAQ
What key is Hard Acid in?
Hard Acid by Charlie Sparks is in D minor, or 7A on the Camelot wheel.
What BPM is Hard Acid?
Hard Acid runs at 136 BPM, a driving up-tempo track.
What mixes well with Hard Acid?
From 7A it blends harmonically with 8A, 7B, 6A. Moving to 8A lifts the energy a step.
Is Hard Acid good for peak time?
With energy 99 out of 100 at 136 BPM, it works best as a peak-time weapon.
Mixes harmonically
7A → 6A · 8A · 7BFrom 7A, 8A (A minor) lifts the energy a step; 7B (F major) brightens to the relative major; 6A (G minor) cools the energy down a step.
How to mix it
In 7A at 136 BPM: 8A (A minor) — move to 8A to push the floor harder; 7B (F major) — switch to 7B for a mood change without losing the groove; 6A (G minor) — drop to 6A to bring the room down gently.
Pitch range at ±6%: 128-144 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 2A rather than 7A; below -5% it reads as 12A. With key lock on, it stays 7A across the whole range.
Programming: a peak-time weapon — save it for the main stretch (energy 99/100).
Similar tempo
Within ±3 BPM of 136 — beatmatch without a big tempo pull.
![Radiax - ARTCØRE [TECHNO] Remix by Marco Ginelli cover art](https://i.scdn.co/image/ab67616d00001e02b48b1dd4f714ae66914f50a4){kind=small}
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Other recommendations
Beyond strict key and genre matches: tracks that still sit in beatmatch range of 136 BPM with a compatible energy and groove — candidates for a key jump or a genre crossover.
