Björk · Vespertine
Hidden Place
Hidden Place is in A minor at 149.9 beats per minute.
Tempo
150 BPM · Allegromedian of 176 analyses · 149.4–150 across the middle eight tenths- Key
- A minorno sharps and no flats · the key most of the analyses agreed on
- Agreement
- 100%share of analyses that agreed
- Analyses
- 176people who ran the extractor
- One beat
- 400.3milliseconds, 60,000 ÷ BPM
- Tuning
- 434.2Hz · -23 cents from A 440
- Dynamics
- 3.4dB the level wanders from its average
- Loudness
- 0.751Essentia's 0–1 scale, not dB
- Danceability
- 1.064Essentia's danceability, 0–3
Source: AcousticBrainz, dump of 2022-06-23 (CC0) · MusicBrainz core data, 2026-09-17 (CC0) · how each number is measured. Measured up to 23.06.2022 — AcousticBrainz stopped collecting in 2022, so nothing released after that date is here.
What the numbers say
176 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 100% — put it in A minor, a key signature of no sharps and no flats. The tempo printed above is the median of the 176 readings; 100% of them land within 2% of it, and they barely differ at all.
At 149.9 BPM one beat lasts 400.3 milliseconds, so a sixteenth note is 100.1 ms and a dotted eighth 300.2 ms — the delay times for this recording. Counted half as fast it is 75 BPM, counted twice as fast 299.8. A score would mark that Allegro, by the ranges this site uses.
The analyses put the reference pitch of the recording at 434.2 Hz, which is 23 cents below concert A at 440 Hz — the sort of drift a tape machine or a slightly different mastering leaves behind. That is a fact about this transfer of the music, not about how it was played.
The dynamic complexity of the recording measures 3.4 dB: that is how far the level wanders from its own average, so a small number means a loud, flat master and a large one means a recording that still breathes. Its average loudness is 0.751 on Essentia's 0-to-1 scale, which is not decibels and is not comparable to a streaming service's number.
10 other recordings here are in A minor; the ones listed below are the closest in tempo.
Beats per bar are not in this dataset. AcousticBrainz's analysis reports a tempo, a key and a loudness, and no time signature at all, so this page does not print one — a 4/4 here would be a guess dressed as a measurement.
Keys that fit with A minor
Each of these differs from A minor by at most one accidental, or shares its tonic. That is the whole of what a mixing wheel encodes; here the relations are named instead of numbered.
Delay times at 150 BPM
| Note value | Beats | Milliseconds | Hertz |
|---|---|---|---|
| Whole note | 4 | 1601.1 | 0.62 |
| Half note | 2 | 800.5 | 1.25 |
| Dotted quarter | 1.5 | 600.4 | 1.67 |
| Quarter note (one beat) | 1 | 400.3 | 2.5 |
| Quarter triplet | 0.667 | 266.8 | 3.75 |
| Dotted eighth | 0.75 | 300.2 | 3.33 |
| Eighth note | 0.5 | 200.1 | 5 |
| Eighth triplet | 0.333 | 133.4 | 7.5 |
| Dotted sixteenth | 0.375 | 150.1 | 6.66 |
| Sixteenth note | 0.25 | 100.1 | 9.99 |
| Sixteenth triplet | 0.167 | 66.7 | 14.99 |
| Thirty-second note | 0.125 | 50 | 19.99 |
Half time 75 BPM · double time 299.8 BPM. Every row is one beat (400.3 ms) times the fraction in the second column.
Closest in key and tempo
- Black PantherCrystal CastlesA minor150BPM
- Kick It OutHeartA minor150BPM
- Take It as It ComesThe DoorsA minor149BPM
- Teddy PickerArctic MonkeysA minor150BPM
- Sun KingThe BeatlesA minor151BPM
- Declare IndependenceBjörkA minor149BPM
- New ProgramCurren$y feat. Young RoddyA minor151BPM
- AlabamaNeil YoungA minor148BPM
- InnuendoQueenA minor148BPM
- Bring Your Daughter… to the SlaughterIron MaidenA minor148BPM
Recordings in A minor, ordered by how near their tempo is to 150 BPM. A calculation, not a recommendation.
All songs in A minorAll songs at 150 BPMA minor at 140–149 BPMBjörk
MusicBrainz collapses 40 recording ids into this one. Recording id b37ac7fc-4866-497b-b6cb-7fc643cf40fe.