Heartstrings
30s preview
- Key
- 4A · F minor
- BPM
- 175
- Half-time
- 88
- Open Key
- 9m
- Energy
- 79/100
- Pop
- 17/100
- Length
- 3:52
- Released
- 2017
- Genre
- Drum N Bass
- Loudness
- -5.5 dB
- Dynamics
- 13.6 dB
- ISRC
- USAT21700385
Key, BPM and audio features: model-based audio analysis · how we measure · catalogue updated July 2026
Heartstrings is a drum n bass track in F minor (4A) at 175 BPM. Tonally it lands dark and driving. It leans atmospheric over strictly danceable. It is vocal-led. The master keeps unusual dynamic range for club music (crest 14 dB). A 2017 production that still circulates in sets. Less groove-driven than 99% of 1991's catalogue. In a set it works best as an opener or closing-set piece.
- Tempo:
- faster than 95% of 1991's catalogue
- Energy:
- calmer than 93% of 1991's catalogue
- Brightness:
- darker than 79% of 1991's catalogue
Sonic profile
Frequency spectrum
amplitude · bass → treble
- 31%
- Low
- 30-130 Hz
- 26%
- Low-mid
- 130-570 Hz
- 22%
- Upper-mid
- 570 Hz-2.5 kHz
- 21%
- High
- 2.5-11 kHz
FAQ
What key is Heartstrings in?
Heartstrings by 1991 is in F minor, or 4A on the Camelot wheel.
What BPM is Heartstrings?
Heartstrings runs at 175 BPM.
What mixes well with Heartstrings?
From 4A it blends harmonically with 5A, 4B, 3A. Moving to 5A lifts the energy a step.
Is Heartstrings good for peak time?
With energy 79 out of 100 at 175 BPM, it works best as an opener or closing-set piece.
Mixes harmonically
4A → 3A · 5A · 4BFrom 4A, 5A (C minor) lifts the energy a step; 4B (A♭ major) brightens to the relative major; 3A (B♭ minor) cools the energy down a step.
How to mix it
In 4A at 175 BPM: 5A (C minor) — move to 5A to push the floor harder; 4B (A♭ major) — switch to 4B for a mood change without losing the groove; 3A (B♭ minor) — drop to 3A to bring the room down gently.
Pitch range at ±6%: 164-186 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 11A rather than 4A; below -5% it reads as 9A. With key lock on, it stays 4A across the whole range.
Programming: an opener or closing-set piece.
Similar tempo
Within ±3 BPM of 175 — beatmatch without a big tempo pull.
More drum n bass
More from 1991
Full profile
Other recommendations
Beyond strict key and genre matches: tracks that still sit in beatmatch range of 175 BPM with a compatible energy and groove — candidates for a key jump or a genre crossover.
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