TempoPeek

AC/DC · Fly on the Wall

Shake Your Foundations

Shake Your Foundations is in G minor at 122.7 beats per minute.

4080120160200

Tempo

123 BPM · Allegromedian of 220 analyses · 122.7–122.8 across the middle eight tenths
Key
G minor2 flats · the key most of the analyses agreed on
Agreement
98%share of analyses that agreed
Analyses
220people who ran the extractor
One beat
489milliseconds, 60,000 ÷ BPM
Tuning
443.6Hz · +14 cents from A 440
Dynamics
2.97dB the level wanders from its average
Loudness
0.946Essentia's 0–1 scale, not dB
Danceability
1.293Essentia'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

220 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 98% — put it in G minor, a key signature of 2 flats. The tempo printed above is the median of the 220 readings; 100% of them land within 2% of it, and they barely differ at all.

At 122.7 BPM one beat lasts 489 milliseconds, so a sixteenth note is 122.2 ms and a dotted eighth 366.7 ms — the delay times for this recording. Counted half as fast it is 61.4 BPM, counted twice as fast 245.4. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 443.6 Hz, which is 14 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 2.97 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 0.946 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 G 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 G minor

Each of these differs from G 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 123 BPM

Note valueBeatsMillisecondsHertz
Whole note419560.51
Half note29781.02
Dotted quarter1.5733.51.36
Quarter note (one beat)14892.05
Quarter triplet0.6673263.07
Dotted eighth0.75366.72.73
Eighth note0.5244.54.09
Eighth triplet0.3331636.14
Dotted sixteenth0.375183.45.45
Sixteenth note0.25122.28.18
Sixteenth triplet0.16781.512.27
Thirty-second note0.12561.116.36

Half time 61.4 BPM · double time 245.4 BPM. Every row is one beat (489 ms) times the fraction in the second column.

Closest in key and tempo

  1. Market ForroCarlinhos Brown & Mikael MuttiG minor122BPM
  2. Renegades of FunkRage Against the MachineG minor124BPM
  3. Deep BlueArcade FireG minor121BPM
  4. Bad GirlsDonna SummerG minor120BPM
  5. Rumour Has ItAdeleG minor120BPM
  6. Per amoreAndrea BocelliG minor120BPM
  7. VanishedCrystal CastlesG minor120BPM
  8. Courtship DatingCrystal CastlesG minor120BPM
  9. Losing HandRay CharlesG minor126BPM
  10. Lazy BirdJohn ColtraneG minor126BPM

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

All songs in G minorAll songs at 123 BPMG minor at 120–129 BPMAC/DC

MusicBrainz collapses 31 recording ids into this one. Recording id 5bac79b7-b17f-4501-bbbf-d74afc188130.