Miles Davis · 'Round About Midnight

Walkin'

Walkin' is in F major at 126.9 beats per minute.

4080120160200

Tempo

127 BPM · Allegromedian of 144 analyses · 107.5–150.8 across the middle eight tenths
Key
F major1 flat · the key most of the analyses agreed on
Agreement
31%share of analyses that agreed
Analyses
144people who ran the extractor
One beat
472.8milliseconds, 60,000 ÷ BPM
Tuning
441Hz · +4 cents from A 440
Dynamics
5.43dB the level wanders from its average
Loudness
0.199Essentia's 0–1 scale, not dB
Danceability
1.111Essentia'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

144 independent analyses of this recording were submitted to AcousticBrainz. Fewer than half of them — 31% — put it in F major, a key signature of 1 flat. The tempo printed above is the median of the 144 readings; 22% of them land within 2% of it, and the middle eight tenths of them run from 107.5 to 150.8 BPM. That is a recording the detector cannot settle on — the readings are spread far enough that the median is a summary of a disagreement rather than a measurement anybody should trust to the decimal.

At 126.9 BPM one beat lasts 472.8 milliseconds, so a sixteenth note is 118.2 ms and a dotted eighth 354.6 ms — the delay times for this recording. Counted half as fast it is 63.5 BPM, counted twice as fast 253.8. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 441 Hz, which is 4 cents above concert A at 440 Hz — close enough to standard that a tuner would not argue. That is a fact about this transfer of the music, not about how it was played.

The dynamic complexity of the recording measures 5.43 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 0.199 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 F 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 F major

Each of these differs from F 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 127 BPM

Note valueBeatsMillisecondsHertz
Whole note41891.30.53
Half note2945.61.06
Dotted quarter1.5709.21.41
Quarter note (one beat)1472.82.12
Quarter triplet0.667315.23.17
Dotted eighth0.75354.62.82
Eighth note0.5236.44.23
Eighth triplet0.333157.66.35
Dotted sixteenth0.375177.35.64
Sixteenth note0.25118.28.46
Sixteenth triplet0.16778.812.69
Thirty-second note0.12559.116.92

Half time 63.5 BPM · double time 253.8 BPM. Every row is one beat (472.8 ms) times the fraction in the second column.

Closest in key and tempo

  1. Smooth CriminalAlien Ant FarmF major127BPM
  2. Burnin’ / Too LongDaft PunkF major127BPM
  3. The FameLady GagaF major127BPM
  4. I Go to ExtremesBilly JoelF major127BPM
  5. SaraFleetwood MacF major127BPM
  6. Oh YeahDaft PunkF major127BPM
  7. Can’t Get EnoughBad CompanyF major127BPM
  8. The CityThe 1975F major127BPM
  9. Mo’ OnionsBooker T. & the MG’sF major127BPM
  10. I’ll Be Your Baby TonightBob DylanF major127BPM

Recordings in F major, ordered by how near their tempo is to 127 BPM. A calculation, not a recommendation.

All songs in F majorAll songs at 127 BPMF major at 120–129 BPMMiles Davis

MusicBrainz collapses 97 recording ids into this one. Recording id a04740b9-6037-4612-a3da-c88aa538e528.