Portishead · Dummy

Roads

Roads is in A minor at 152.1 beats per minute.

4080120160200

Tempo

152 BPM · Allegromedian of 142 analyses · 152.1–152.2 across the middle eight tenths
Key
A minorno sharps and no flats · the key most of the analyses agreed on
Agreement
95%share of analyses that agreed
Analyses
142people who ran the extractor
One beat
394.5milliseconds, 60,000 ÷ BPM
Tuning
440.5Hz · +2 cents from A 440
Dynamics
2.74dB the level wanders from its average
Loudness
0.925Essentia's 0–1 scale, not dB
Danceability
1.143Essentia'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

142 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 95% — put it in A minor, a key signature of no sharps and no flats. The tempo printed above is the median of the 142 readings; 92% of them land within 2% of it, and they barely differ at all.

At 152.1 BPM one beat lasts 394.5 milliseconds, so a sixteenth note is 98.6 ms and a dotted eighth 295.9 ms — the delay times for this recording. Counted half as fast it is 76.1 BPM, counted twice as fast 304.2. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 440.5 Hz, which is 2 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 2.74 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 0.925 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 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 A minor

Each of these differs from A 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 152 BPM

Note valueBeatsMillisecondsHertz
Whole note41577.90.63
Half note27891.27
Dotted quarter1.5591.71.69
Quarter note (one beat)1394.52.54
Quarter triplet0.6672633.8
Dotted eighth0.75295.93.38
Eighth note0.5197.25.07
Eighth triplet0.333131.57.61
Dotted sixteenth0.375147.96.76
Sixteenth note0.2598.610.14
Sixteenth triplet0.16765.715.21
Thirty-second note0.12549.320.28

Half time 76.1 BPM · double time 304.2 BPM. Every row is one beat (394.5 ms) times the fraction in the second column.

Closest in key and tempo

  1. The ChainFleetwood MacA minor152BPM
  2. Black HoneyThriceA minor152BPM
  3. PanicBackstreet BoysA minor152BPM
  4. I Feel You3 Doors DownA minor152BPM
  5. RunawayBon JoviA minor152BPM
  6. New ProgramCurren$y feat. Young RoddyA minor151BPM
  7. Ten Years GoneLed ZeppelinA minor153BPM
  8. Ticks & LeechesToolA minor153BPM
  9. Pump ItThe Black Eyed PeasA minor153BPM
  10. Sun KingThe BeatlesA minor151BPM

Recordings in A minor, ordered by how near their tempo is to 152 BPM. A calculation, not a recommendation.

All songs in A minorAll songs at 152 BPMA minor at 150–159 BPMPortishead

MusicBrainz collapses 34 recording ids into this one. Recording id 8a49dba0-253a-4535-b87f-78bb035336ce.