Amy Winehouse · Back to Black
Rehab
Rehab is in C major at 145.4 beats per minute.
Tempo
145 BPM · Allegromedian of 424 analyses · 145.3–145.4 across the middle eight tenths- Key
- C majorno sharps and no flats · the key most of the analyses agreed on
- Agreement
- 93%share of analyses that agreed
- Analyses
- 424people who ran the extractor
- One beat
- 412.7milliseconds, 60,000 ÷ BPM
- Tuning
- 434.2Hz · -23 cents from A 440
- Dynamics
- 2.46dB the level wanders from its average
- Loudness
- 0.969Essentia's 0–1 scale, not dB
- Danceability
- 1.344Essentia'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
424 independent analyses of this recording were submitted to AcousticBrainz. Most of them — 93% — put it in C major, a key signature of no sharps and no flats. The tempo printed above is the median of the 424 readings; 98% of them land within 2% of it, and they barely differ at all.
At 145.4 BPM one beat lasts 412.7 milliseconds, so a sixteenth note is 103.2 ms and a dotted eighth 309.5 ms — the delay times for this recording. Counted half as fast it is 72.7 BPM, counted twice as fast 290.8. 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 2.46 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 0.969 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 major; 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 major
Each of these differs from C major 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 145 BPM
| Note value | Beats | Milliseconds | Hertz |
|---|---|---|---|
| Whole note | 4 | 1650.6 | 0.61 |
| Half note | 2 | 825.3 | 1.21 |
| Dotted quarter | 1.5 | 619 | 1.62 |
| Quarter note (one beat) | 1 | 412.7 | 2.42 |
| Quarter triplet | 0.667 | 275.1 | 3.64 |
| Dotted eighth | 0.75 | 309.5 | 3.23 |
| Eighth note | 0.5 | 206.3 | 4.85 |
| Eighth triplet | 0.333 | 137.6 | 7.27 |
| Dotted sixteenth | 0.375 | 154.7 | 6.46 |
| Sixteenth note | 0.25 | 103.2 | 9.69 |
| Sixteenth triplet | 0.167 | 68.8 | 14.54 |
| Thirty-second note | 0.125 | 51.6 | 19.39 |
Half time 72.7 BPM · double time 290.8 BPM. Every row is one beat (412.7 ms) times the fraction in the second column.
The same title by somebody else
Matched on the title alone, so this list can hold a different song that happens to share a name. Nothing here claims one is a cover of the other.
Closest in key and tempo
- I Don’t Wanna Live Without Your LoveChicagoC major146BPM
- L’esprit d’escalierJetC major145BPM
- Loves Me Like a RockPaul SimonC major145BPM
- UnderdogAudio AdrenalineC major145BPM
- Tomorrow Never CameLana Del Rey ft. Sean Ono LennonC major146BPM
- Strangeness and CharmFlorence + the MachineC major145BPM
- TushZZ TopC major145BPM
- A Whiter Shade of PaleAnnie LennoxC major146BPM
- If I Knew ThenBackstreet BoysC major145BPM
- When I Was Your ManBruno MarsC major146BPM
Recordings in C major, ordered by how near their tempo is to 145 BPM. A calculation, not a recommendation.
All songs in C majorAll songs at 145 BPMC major at 140–149 BPMAmy Winehouse
MusicBrainz collapses 47 recording ids into this one. Recording id 873eba85-b721-4728-be2e-96ce94cccb8b.