Metallica · Master of Puppets
Welcome Home (Sanitarium)
Welcome Home (Sanitarium) is in E minor at 94.3 beats per minute.
Tempo
94 BPM · Andantemedian of 170 analyses · 94.2–94.4 across the middle eight tenths- Key
- E minor1 sharp · the key most of the analyses agreed on
- Agreement
- 92%share of analyses that agreed
- Analyses
- 170people who ran the extractor
- One beat
- 636.3milliseconds, 60,000 ÷ BPM
- Tuning
- 438.7Hz · -5 cents from A 440
- Dynamics
- 2.53dB the level wanders from its average
- Loudness
- 0.723Essentia's 0–1 scale, not dB
- Danceability
- 1.211Essentia'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
170 independent analyses of this recording were submitted to AcousticBrainz. Most of them — 92% — put it in E minor, a key signature of 1 sharp. The tempo printed above is the median of the 170 readings; 98% of them land within 2% of it, and they barely differ at all.
At 94.3 BPM one beat lasts 636.3 milliseconds, so a sixteenth note is 159.1 ms and a dotted eighth 477.2 ms — the delay times for this recording. Counted half as fast it is 47.2 BPM, counted twice as fast 188.6. A score would mark that Andante, by the ranges this site uses.
The analyses put the reference pitch of the recording at 438.7 Hz, which is 5 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 2.53 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 0.723 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 E 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 E minor
Each of these differs from E 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 94 BPM
| Note value | Beats | Milliseconds | Hertz |
|---|---|---|---|
| Whole note | 4 | 2545.1 | 0.39 |
| Half note | 2 | 1272.5 | 0.79 |
| Dotted quarter | 1.5 | 954.4 | 1.05 |
| Quarter note (one beat) | 1 | 636.3 | 1.57 |
| Quarter triplet | 0.667 | 424.2 | 2.36 |
| Dotted eighth | 0.75 | 477.2 | 2.1 |
| Eighth note | 0.5 | 318.1 | 3.14 |
| Eighth triplet | 0.333 | 212.1 | 4.72 |
| Dotted sixteenth | 0.375 | 238.6 | 4.19 |
| Sixteenth note | 0.25 | 159.1 | 6.29 |
| Sixteenth triplet | 0.167 | 106 | 9.43 |
| Thirty-second note | 0.125 | 79.5 | 12.57 |
Half time 47.2 BPM · double time 188.6 BPM. Every row is one beat (636.3 ms) times the fraction in the second column.
Closest in key and tempo
- FighterChristina AguileraE minor94BPM
- Communication / Skit IIIBlack Eyed PeasE minor95BPM
- Going Down / Love in an ElevatorAerosmithE minor94BPM
- Love in an ElevatorAerosmithE minor94BPM
- Bring Me to LifeEvanescenceE minor95BPM
- I Remember CaliforniaR.E.M.E minor95BPM
- Empty SpacesPink FloydE minor96BPM
- Good Day in HellEaglesE minor96BPM
- President of What?Death Cab for CutieE minor96BPM
- Dos gardeniasBuena Vista Social ClubE minor92BPM
Recordings in E minor, ordered by how near their tempo is to 94 BPM. A calculation, not a recommendation.
All songs in E minorAll songs at 94 BPME minor at 90–99 BPMMetallica
MusicBrainz collapses 426 recording ids into this one. Recording id a20860e9-7636-422b-a9cd-2da671b242a8.