AC/DC · For Those About to Rock (We Salute You)

Let’s Get It Up

Let’s Get It Up is in A major at 109.7 beats per minute.

4080120160200

Tempo

110 BPM · Moderatomedian of 158 analyses · 109.6–109.8 across the middle eight tenths
Key
A major3 sharps · the key most of the analyses agreed on
Agreement
99%share of analyses that agreed
Analyses
158people who ran the extractor
One beat
546.9milliseconds, 60,000 ÷ BPM
Tuning
435.7Hz · -17 cents from A 440
Dynamics
2.84dB the level wanders from its average
Loudness
0.952Essentia's 0–1 scale, not dB
Danceability
1.384Essentia'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

158 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 99% — put it in A major, a key signature of 3 sharps. The tempo printed above is the median of the 158 readings; 93% of them land within 2% of it, and they barely differ at all.

At 109.7 BPM one beat lasts 546.9 milliseconds, so a sixteenth note is 136.7 ms and a dotted eighth 410.2 ms — the delay times for this recording. Counted half as fast it is 54.9 BPM, counted twice as fast 219.4. A score would mark that Moderato, by the ranges this site uses.

The analyses put the reference pitch of the recording at 435.7 Hz, which is 17 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 2.84 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 0.952 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 A 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 A major

Each of these differs from A 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 110 BPM

Note valueBeatsMillisecondsHertz
Whole note42187.80.46
Half note21093.90.91
Dotted quarter1.5820.41.22
Quarter note (one beat)1546.91.83
Quarter triplet0.667364.62.74
Dotted eighth0.75410.22.44
Eighth note0.5273.53.66
Eighth triplet0.333182.35.49
Dotted sixteenth0.375205.14.88
Sixteenth note0.25136.77.31
Sixteenth triplet0.16791.210.97
Thirty-second note0.12568.414.63

Half time 54.9 BPM · double time 219.4 BPM. Every row is one beat (546.9 ms) times the fraction in the second column.

Closest in key and tempo

  1. The MonsterEminem ft. RihannaA major110BPM
  2. Kelly Watch the StarsAirA major110BPM
  3. Miss GradenkoThe PoliceA major110BPM
  4. Baby Be MineMichael JacksonA major110BPM
  5. NumbLinkin ParkA major110BPM
  6. Worst BehaviorDrakeA major110BPM
  7. The Answer to Our LifeBackstreet BoysA major110BPM
  8. Royal OrleansLed ZeppelinA major109BPM
  9. Setting Me UpDire StraitsA major110BPM
  10. DaydreamerAdeleA major109BPM

Recordings in A major, ordered by how near their tempo is to 110 BPM. A calculation, not a recommendation.

All songs in A majorAll songs at 110 BPMA major at 100–109 BPMAC/DC

MusicBrainz collapses 16 recording ids into this one. Recording id 3140d55b-2139-4564-becb-698fcc5a3b12.