Led Zeppelin · Coda
Bonzo’s Montreux
Bonzo’s Montreux is in C sharp minor at 178.2 beats per minute.
Tempo
178 BPM · Prestomedian of 177 analyses · 178.2–184.6 across the middle eight tenths- Key
- C♯ minor4 sharps · the key most of the analyses agreed on
- Agreement
- 94%share of analyses that agreed
- Analyses
- 177people who ran the extractor
- One beat
- 336.7milliseconds, 60,000 ÷ BPM
- Tuning
- 434.2Hz · -23 cents from A 440
- Dynamics
- 4.13dB the level wanders from its average
- Loudness
- 0.938Essentia's 0–1 scale, not dB
- Danceability
- 1.132Essentia'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
177 independent analyses of this recording were submitted to AcousticBrainz. Most of them — 94% — put it in C sharp minor, a key signature of 4 sharps. The tempo printed above is the median of the 177 readings; 76% of them land within 2% of it, and the middle eight tenths of them run from 178.2 to 184.6 BPM.
At 178.2 BPM one beat lasts 336.7 milliseconds, so a sixteenth note is 84.2 ms and a dotted eighth 252.5 ms — the delay times for this recording. Counted half as fast it is 89.1 BPM, counted twice as fast 356.4. A score would mark that Presto, 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 4.13 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 0.938 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 178 BPM
| Note value | Beats | Milliseconds | Hertz |
|---|---|---|---|
| Whole note | 4 | 1346.8 | 0.74 |
| Half note | 2 | 673.4 | 1.49 |
| Dotted quarter | 1.5 | 505.1 | 1.98 |
| Quarter note (one beat) | 1 | 336.7 | 2.97 |
| Quarter triplet | 0.667 | 224.5 | 4.46 |
| Dotted eighth | 0.75 | 252.5 | 3.96 |
| Eighth note | 0.5 | 168.4 | 5.94 |
| Eighth triplet | 0.333 | 112.2 | 8.91 |
| Dotted sixteenth | 0.375 | 126.3 | 7.92 |
| Sixteenth note | 0.25 | 84.2 | 11.88 |
| Sixteenth triplet | 0.167 | 56.1 | 17.82 |
| Thirty-second note | 0.125 | 42.1 | 23.76 |
Half time 89.1 BPM · double time 356.4 BPM. Every row is one beat (336.7 ms) times the fraction in the second column.
Closest in key and tempo
- Rock and RollLed ZeppelinC♯ minor172BPM
- Upgrade UBeyoncé feat. Jay‐ZC♯ minor172BPM
- Andy, You’re a StarThe KillersC♯ minor166BPM
- Big BirdThe B‐52sC♯ minor166BPM
- Sabbra CadabraBlack SabbathC♯ minor164BPM
- Them BonesAlice in ChainsC♯ minor164BPM
- Like Toy SoldiersEminemC♯ minor164BPM
- SummertimeJohn ColtraneC♯ minor163BPM
- BecauseThe BeatlesC♯ minor163BPM
- Adagio for TRONDaft PunkC♯ minor162BPM
Recordings in C sharp minor, ordered by how near their tempo is to 178 BPM. A calculation, not a recommendation.
All songs in C sharp minorAll songs at 178 BPMLed Zeppelin
MusicBrainz collapses 3 recording ids into this one. Recording id 316f1a27-0631-4c27-b559-19b552b40227.