John Coltrane · Coltrane's Sound
Equinox
Equinox is in C sharp minor at 117.1 beats per minute.
Tempo
117 BPM · Moderatomedian of 192 analyses · 117.1–117.1 across the middle eight tenths- Key
- C♯ minor4 sharps · the key most of the analyses agreed on
- Agreement
- 100%share of analyses that agreed
- Analyses
- 192people who ran the extractor
- One beat
- 512.4milliseconds, 60,000 ÷ BPM
- Tuning
- 438.2Hz · -7 cents from A 440
- Dynamics
- 5.77dB the level wanders from its average
- Loudness
- 0.537Essentia's 0–1 scale, not dB
- Danceability
- 1.138Essentia'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
192 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 100% — put it in C sharp minor, a key signature of 4 sharps. The tempo printed above is the median of the 192 readings; 100% of them land within 2% of it, and they barely differ at all.
At 117.1 BPM one beat lasts 512.4 milliseconds, so a sixteenth note is 128.1 ms and a dotted eighth 384.3 ms — the delay times for this recording. Counted half as fast it is 58.6 BPM, counted twice as fast 234.2. A score would mark that Moderato, by the ranges this site uses.
The analyses put the reference pitch of the recording at 438.2 Hz, which is 7 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 5.77 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 0.537 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 C sharp 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 C♯ minor
Each of these differs from C♯ 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 117 BPM
| Note value | Beats | Milliseconds | Hertz |
|---|---|---|---|
| Whole note | 4 | 2049.5 | 0.49 |
| Half note | 2 | 1024.8 | 0.98 |
| Dotted quarter | 1.5 | 768.6 | 1.3 |
| Quarter note (one beat) | 1 | 512.4 | 1.95 |
| Quarter triplet | 0.667 | 341.6 | 2.93 |
| Dotted eighth | 0.75 | 384.3 | 2.6 |
| Eighth note | 0.5 | 256.2 | 3.9 |
| Eighth triplet | 0.333 | 170.8 | 5.86 |
| Dotted sixteenth | 0.375 | 192.1 | 5.2 |
| Sixteenth note | 0.25 | 128.1 | 7.81 |
| Sixteenth triplet | 0.167 | 85.4 | 11.71 |
| Thirty-second note | 0.125 | 64 | 15.61 |
Half time 58.6 BPM · double time 234.2 BPM. Every row is one beat (512.4 ms) times the fraction in the second column.
Closest in key and tempo
- PtolemyAphex TwinC♯ minor117BPM
- The Working ManCreedence Clearwater RevivalC♯ minor117BPM
- Face to FaceDaft PunkC♯ minor118BPM
- ThrillerMichael JacksonC♯ minor118BPM
- Representin’ 932PacC♯ minor119BPM
- It’s a MiracleCulture ClubC♯ minor119BPM
- Strike It UpBlack BoxC♯ minor119BPM
- ArrivalDaft PunkC♯ minor120BPM
- The BrainwasherDaft PunkC♯ minor120BPM
- MapsMaroon 5C♯ minor120BPM
Recordings in C sharp minor, ordered by how near their tempo is to 117 BPM. A calculation, not a recommendation.
All songs in C sharp minorAll songs at 117 BPMC♯ minor at 110–119 BPMJohn Coltrane
MusicBrainz collapses 3 recording ids into this one. Recording id 41367a48-b845-4783-8f24-cd08c4dd62db.