Backstreet Boys · Millennium
The Perfect Fan
The Perfect Fan is in A major at 141.8 beats per minute.
Tempo
142 BPM · Allegromedian of 153 analyses · 141.7–141.8 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
- 153people who ran the extractor
- One beat
- 423.1milliseconds, 60,000 ÷ BPM
- Tuning
- 440Hz · 0 cents from A 440
- Dynamics
- 4.39dB the level wanders from its average
- Loudness
- 0.365Essentia's 0–1 scale, not dB
- Danceability
- 1.043Essentia'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
153 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 153 readings; 100% of them land within 2% of it, and they barely differ at all.
At 141.8 BPM one beat lasts 423.1 milliseconds, so a sixteenth note is 105.8 ms and a dotted eighth 317.3 ms — the delay times for this recording. Counted half as fast it is 70.9 BPM, counted twice as fast 283.6. A score would mark that Allegro, by the ranges this site uses.
The analyses put the reference pitch of the recording at 440 Hz, which is 0 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 4.39 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 0.365 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 142 BPM
| Note value | Beats | Milliseconds | Hertz |
|---|---|---|---|
| Whole note | 4 | 1692.5 | 0.59 |
| Half note | 2 | 846.3 | 1.18 |
| Dotted quarter | 1.5 | 634.7 | 1.58 |
| Quarter note (one beat) | 1 | 423.1 | 2.36 |
| Quarter triplet | 0.667 | 282.1 | 3.55 |
| Dotted eighth | 0.75 | 317.3 | 3.15 |
| Eighth note | 0.5 | 211.6 | 4.73 |
| Eighth triplet | 0.333 | 141 | 7.09 |
| Dotted sixteenth | 0.375 | 158.7 | 6.3 |
| Sixteenth note | 0.25 | 105.8 | 9.45 |
| Sixteenth triplet | 0.167 | 70.5 | 14.18 |
| Thirty-second note | 0.125 | 52.9 | 18.91 |
Half time 70.9 BPM · double time 283.6 BPM. Every row is one beat (423.1 ms) times the fraction in the second column.
Closest in key and tempo
- Across the UniverseDavid BowieA major142BPM
- He Ain’t Heavy, He’s My BrotherNeil DiamondA major142BPM
- Crawling Back to YouBackstreet BoysA major142BPM
- James DeanEaglesA major141BPM
- Throw That Beat in the Garbage CanThe B‐52’sA major141BPM
- Our HouseCrosby, Stills, Nash & YoungA major141BPM
- Blow OutRadioheadA major141BPM
- Four SticksLed ZeppelinA major143BPM
- I Know YouCraig David feat. BastilleA major141BPM
- Oliver’s ArmyElvis Costello & The AttractionsA major143BPM
Recordings in A major, ordered by how near their tempo is to 142 BPM. A calculation, not a recommendation.
All songs in A majorAll songs at 142 BPMA major at 140–149 BPMBackstreet Boys
MusicBrainz collapses 1 recording id into this one. Recording id 0ecce56b-2593-4f75-94d3-8fba3a1d2714.