TempoPeek

Miles Davis · Classics in Jazz, Part 1

Jeru

Jeru is in E flat major at 178.2 beats per minute.

4080120160200

Tempo

178 BPM · Prestomedian of 185 analyses · 178.2–178.2 across the middle eight tenths
Key
E♭ major3 flats · the key most of the analyses agreed on
Agreement
98%share of analyses that agreed
Analyses
185people who ran the extractor
One beat
336.7milliseconds, 60,000 ÷ BPM
Tuning
442.5Hz · +10 cents from A 440
Dynamics
3.28dB the level wanders from its average
Loudness
0.907Essentia's 0–1 scale, not dB
Danceability
1.27Essentia'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

185 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 98% — put it in E flat major, a key signature of 3 flats. The tempo printed above is the median of the 185 readings; 98% of them land within 2% of it, and they barely differ at all.

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 442.5 Hz, which is 10 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 3.28 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 0.907 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 E flat 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 E♭ major

Each of these differs from E♭ 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 178 BPM

Note valueBeatsMillisecondsHertz
Whole note41346.80.74
Half note2673.41.49
Dotted quarter1.5505.11.98
Quarter note (one beat)1336.72.97
Quarter triplet0.667224.54.46
Dotted eighth0.75252.53.96
Eighth note0.5168.45.94
Eighth triplet0.333112.28.91
Dotted sixteenth0.375126.37.92
Sixteenth note0.2584.211.88
Sixteenth triplet0.16756.117.82
Thirty-second note0.12542.123.76

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

  1. Judy Is a PunkRamonesE♭ major178BPM
  2. EruptionVan HalenE♭ major178BPM
  3. Norwegian Wood (This Bird Has Flown)The BeatlesE♭ major178BPM
  4. The Lord’s PrayerAndrea Bocelli feat. The Mormon Tabernacle ChoirE♭ major172BPM
  5. Inertia CreepsMassive AttackE♭ major167BPM
  6. The Longest TimeBilly JoelE♭ major166BPM
  7. Let’s Get It OnMarvin GayeE♭ major166BPM
  8. Life for RentDidoE♭ major166BPM
  9. LandslideSmashing PumpkinsE♭ major166BPM
  10. River Deep - Mountain HighIke & Tina TurnerE♭ major165BPM

Recordings in E flat major, ordered by how near their tempo is to 178 BPM. A calculation, not a recommendation.

All songs in E flat majorAll songs at 178 BPMMiles Davis

MusicBrainz collapses 33 recording ids into this one. Recording id 8b349e4f-dc7a-4eb0-84b9-924554dea663.