TempoPeek

Black Sabbath · Heaven and Hell

Lady Evil

Lady Evil is in B major at 123.4 beats per minute.

4080120160200

Tempo

123 BPM · Allegromedian of 223 analyses · 123.4–123.5 across the middle eight tenths
Key
B major5 sharps · the key most of the analyses agreed on
Agreement
92%share of analyses that agreed
Analyses
223people who ran the extractor
One beat
486.2milliseconds, 60,000 ÷ BPM
Tuning
442.3Hz · +9 cents from A 440
Dynamics
1.84dB the level wanders from its average
Loudness
0.961Essentia's 0–1 scale, not dB
Danceability
1.304Essentia'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

223 independent analyses of this recording were submitted to AcousticBrainz. Most of them — 92% — put it in B major, a key signature of 5 sharps. The tempo printed above is the median of the 223 readings; 100% of them land within 2% of it, and they barely differ at all.

At 123.4 BPM one beat lasts 486.2 milliseconds, so a sixteenth note is 121.6 ms and a dotted eighth 364.7 ms — the delay times for this recording. Counted half as fast it is 61.7 BPM, counted twice as fast 246.8. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 442.3 Hz, which is 9 cents above 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 1.84 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 0.961 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 B 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 B major

Each of these differs from B 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 123 BPM

Note valueBeatsMillisecondsHertz
Whole note41944.90.51
Half note2972.41.03
Dotted quarter1.5729.31.37
Quarter note (one beat)1486.22.06
Quarter triplet0.667324.13.09
Dotted eighth0.75364.72.74
Eighth note0.5243.14.11
Eighth triplet0.333162.16.17
Dotted sixteenth0.375182.35.48
Sixteenth note0.25121.68.23
Sixteenth triplet0.1678112.34
Thirty-second note0.12560.816.45

Half time 61.7 BPM · double time 246.8 BPM. Every row is one beat (486.2 ms) times the fraction in the second column.

Closest in key and tempo

  1. OuvertureDaft PunkB major123BPM
  2. Clearest BlueCHVRCHESB major123BPM
  3. Sarah Yellin’3 Doors DownB major124BPM
  4. Let the Lower Lights Be BurningJohnny CashB major124BPM
  5. Born in the U.S.A.Bruce SpringsteenB major123BPM
  6. CleanDepeche ModeB major123BPM
  7. Don’t CryGuns N’ RosesB major124BPM
  8. VelouriaPixiesB major125BPM
  9. Funky ShitProdigyB major125BPM
  10. Last of the American GirlsGreen DayB major122BPM

Recordings in B major, ordered by how near their tempo is to 123 BPM. A calculation, not a recommendation.

All songs in B majorAll songs at 123 BPMB major at 120–129 BPMBlack Sabbath

MusicBrainz collapses 4 recording ids into this one. Recording id 4325e6d2-8231-4ceb-ba22-3ff8bb5f5fa0.