Scanner · Sound for Spaces
Airfoil
Airfoil is in A flat major at 89.7 beats per minute.
Tempo
90 BPM · Andantemedian of 173 analyses · 89.7–89.7 across the middle eight tenths- Key
- A♭ major4 flats · the key most of the analyses agreed on
- Agreement
- 100%share of analyses that agreed
- Analyses
- 173people who ran the extractor
- One beat
- 668.9milliseconds, 60,000 ÷ BPM
- Tuning
- 434.2Hz · -23 cents from A 440
- Dynamics
- 5.25dB the level wanders from its average
- Loudness
- 0.936Essentia's 0–1 scale, not dB
- Danceability
- 1.279Essentia'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
173 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 100% — put it in A flat major, a key signature of 4 flats. The tempo printed above is the median of the 173 readings; 100% of them land within 2% of it, and they barely differ at all.
At 89.7 BPM one beat lasts 668.9 milliseconds, so a sixteenth note is 167.2 ms and a dotted eighth 501.7 ms — the delay times for this recording. Counted half as fast it is 44.9 BPM, counted twice as fast 179.4. A score would mark that Andante, by the ranges this site uses.
The analyses put the reference pitch of the recording at 434.2 Hz, which is 23 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 5.25 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 0.936 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 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 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 90 BPM
| Note value | Beats | Milliseconds | Hertz |
|---|---|---|---|
| Whole note | 4 | 2675.6 | 0.37 |
| Half note | 2 | 1337.8 | 0.75 |
| Dotted quarter | 1.5 | 1003.3 | 1 |
| Quarter note (one beat) | 1 | 668.9 | 1.5 |
| Quarter triplet | 0.667 | 445.9 | 2.24 |
| Dotted eighth | 0.75 | 501.7 | 1.99 |
| Eighth note | 0.5 | 334.4 | 2.99 |
| Eighth triplet | 0.333 | 223 | 4.49 |
| Dotted sixteenth | 0.375 | 250.8 | 3.99 |
| Sixteenth note | 0.25 | 167.2 | 5.98 |
| Sixteenth triplet | 0.167 | 111.5 | 8.97 |
| Thirty-second note | 0.125 | 83.6 | 11.96 |
Half time 44.9 BPM · double time 179.4 BPM. Every row is one beat (668.9 ms) times the fraction in the second column.
Closest in key and tempo
- I Get a Kick Out of YouFrank SinatraA♭ major90BPM
- I Got TroubleChristina AguileraA♭ major90BPM
- Way Over YonderCarole KingA♭ major89BPM
- Ramblin’ ManThe Allman Brothers BandA♭ major90BPM
- Thru These WallsPhil CollinsA♭ major89BPM
- All at SeaJamie CullumA♭ major89BPM
- Sassafras RootsGreen DayA♭ major91BPM
- Waiting for the NightDepeche ModeA♭ major91BPM
- Todo el amorDe La Ghetto, Wisin & MalumaA♭ major91BPM
- Trust MeJanis JoplinA♭ major91BPM
Recordings in A flat major, ordered by how near their tempo is to 90 BPM. A calculation, not a recommendation.
All songs in A flat majorAll songs at 90 BPMA♭ major at 80–89 BPMScanner
MusicBrainz collapses 1 recording id into this one. Recording id d02d15fb-9e37-4acb-bc7e-ddcbe0ce30bf.