Future · FUTURE
Mask Off
Mask Off is in B flat major at 150.3 beats per minute.
Tempo
150 BPM · Allegromedian of 174 analyses · 150.2–150.4 across the middle eight tenths- Key
- B♭ major2 flats · the key most of the analyses agreed on
- Agreement
- 98%share of analyses that agreed
- Analyses
- 174people who ran the extractor
- One beat
- 399.2milliseconds, 60,000 ÷ BPM
- Tuning
- 434.2Hz · -23 cents from A 440
- Dynamics
- 4.26dB the level wanders from its average
- Loudness
- 0.933Essentia's 0–1 scale, not dB
- Danceability
- 1.065Essentia'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
174 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 98% — put it in B flat major, a key signature of 2 flats. The tempo printed above is the median of the 174 readings; 99% of them land within 2% of it, and they barely differ at all.
At 150.3 BPM one beat lasts 399.2 milliseconds, so a sixteenth note is 99.8 ms and a dotted eighth 299.4 ms — the delay times for this recording. Counted half as fast it is 75.2 BPM, counted twice as fast 300.6. A score would mark that Allegro, 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 4.26 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 0.933 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 B 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 B♭ major
Each of these differs from B♭ 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 150 BPM
| Note value | Beats | Milliseconds | Hertz |
|---|---|---|---|
| Whole note | 4 | 1596.8 | 0.63 |
| Half note | 2 | 798.4 | 1.25 |
| Dotted quarter | 1.5 | 598.8 | 1.67 |
| Quarter note (one beat) | 1 | 399.2 | 2.51 |
| Quarter triplet | 0.667 | 266.1 | 3.76 |
| Dotted eighth | 0.75 | 299.4 | 3.34 |
| Eighth note | 0.5 | 199.6 | 5.01 |
| Eighth triplet | 0.333 | 133.1 | 7.52 |
| Dotted sixteenth | 0.375 | 149.7 | 6.68 |
| Sixteenth note | 0.25 | 99.8 | 10.02 |
| Sixteenth triplet | 0.167 | 66.5 | 15.03 |
| Thirty-second note | 0.125 | 49.9 | 20.04 |
Half time 75.2 BPM · double time 300.6 BPM. Every row is one beat (399.2 ms) times the fraction in the second column.
Closest in key and tempo
- Sk8er BoiAvril LavigneB♭ major150BPM
- All Shook UpElvis PresleyB♭ major151BPM
- SugeDaBabyB♭ major151BPM
- Bloody Well RightSupertrampB♭ major151BPM
- For Crying Out LoudMeat LoafB♭ major151BPM
- Velcro FlyZZ TopB♭ major152BPM
- X21 Savage & Metro Boomin feat. FutureB♭ major149BPM
- All Neon LikeBjörkB♭ major152BPM
- Eyes of the WorldFleetwood MacB♭ major152BPM
- Hey JudeThe BeatlesB♭ major148BPM
Recordings in B flat major, ordered by how near their tempo is to 150 BPM. A calculation, not a recommendation.
All songs in B flat majorAll songs at 150 BPMB♭ major at 150–159 BPM
MusicBrainz collapses 11 recording ids into this one. Recording id 09a613f7-5f9d-414a-9c4a-5c318dfe6b9a.