TempoPeek

Led Zeppelin · Led Zeppelin III

Bron‐Yr‐Aur Stomp

Bron‐Yr‐Aur Stomp is in B flat minor at 108.5 beats per minute.

4080120160200

Tempo

109 BPM · Moderatomedian of 277 analyses · 108.3–111.5 across the middle eight tenths
Key
B♭ minor5 flats · the key most of the analyses agreed on
Agreement
76%share of analyses that agreed
Analyses
277people who ran the extractor
One beat
553milliseconds, 60,000 ÷ BPM
Tuning
434.2Hz · -23 cents from A 440
Dynamics
3.54dB the level wanders from its average
Loudness
0.839Essentia's 0–1 scale, not dB
Danceability
1.421Essentia'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

277 independent analyses of this recording were submitted to AcousticBrainz. Most of them — 76% — put it in B flat minor, a key signature of 5 flats. The tempo printed above is the median of the 277 readings; 79% of them land within 2% of it, and the middle eight tenths of them run from 108.3 to 111.5 BPM.

At 108.5 BPM one beat lasts 553 milliseconds, so a sixteenth note is 138.2 ms and a dotted eighth 414.7 ms — the delay times for this recording. Counted half as fast it is 54.3 BPM, counted twice as fast 217. A score would mark that Moderato, 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 3.54 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 0.839 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 flat 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 B♭ minor

Each of these differs from B♭ 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 109 BPM

Note valueBeatsMillisecondsHertz
Whole note422120.45
Half note211060.9
Dotted quarter1.5829.51.21
Quarter note (one beat)15531.81
Quarter triplet0.667368.72.71
Dotted eighth0.75414.72.41
Eighth note0.5276.53.62
Eighth triplet0.333184.35.43
Dotted sixteenth0.375207.44.82
Sixteenth note0.25138.27.23
Sixteenth triplet0.16792.210.85
Thirty-second note0.12569.114.47

Half time 54.3 BPM · double time 217 BPM. Every row is one beat (553 ms) times the fraction in the second column.

Closest in key and tempo

  1. MiamiWill SmithB♭ minor108BPM
  2. Everybody (Backstreet’s Back) (extended version)Backstreet BoysB♭ minor108BPM
  3. Beat Box (Diversion One)Art of NoiseB♭ minor109BPM
  4. I Ain’t SuperstitiousJeff BeckB♭ minor108BPM
  5. Blood on the Dance FloorMichael JacksonB♭ minor109BPM
  6. Remember the TimeMichael JacksonB♭ minor108BPM
  7. Everybody (Backstreet’s Back)Backstreet BoysB♭ minor108BPM
  8. There You GoP!nkB♭ minor108BPM
  9. All Is Full of LoveBjörkB♭ minor108BPM
  10. Pretty When You CryLana Del ReyB♭ minor109BPM

Recordings in B flat minor, ordered by how near their tempo is to 109 BPM. A calculation, not a recommendation.

All songs in B flat minorAll songs at 109 BPMB♭ minor at 100–109 BPMLed Zeppelin

MusicBrainz collapses 170 recording ids into this one. Recording id 3cb9fc23-e3b0-4c56-8936-0aaa4973e8e7.