Daft Punk · TRON: Legacy: Original Motion Picture Soundtrack
The Son of Flynn
The Son of Flynn is in B flat major at 141 beats per minute.
Tempo
141 BPM · Allegromedian of 132 analyses · 140.8–141.2 across the middle eight tenths- Key
- B♭ major2 flats · the key most of the analyses agreed on
- Agreement
- 89%share of analyses that agreed
- Analyses
- 132people who ran the extractor
- One beat
- 425.5milliseconds, 60,000 ÷ BPM
- Tuning
- 434.2Hz · -23 cents from A 440
- Dynamics
- 4.99dB the level wanders from its average
- Loudness
- 0.763Essentia's 0–1 scale, not dB
- Danceability
- 0.937Essentia'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
132 independent analyses of this recording were submitted to AcousticBrainz. Most of them — 89% — put it in B flat major, a key signature of 2 flats. The tempo printed above is the median of the 132 readings; 92% of them land within 2% of it, and they barely differ at all.
At 141 BPM one beat lasts 425.5 milliseconds, so a sixteenth note is 106.4 ms and a dotted eighth 319.1 ms — the delay times for this recording. Counted half as fast it is 70.5 BPM, counted twice as fast 282. 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 4.99 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 0.763 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 141 BPM
| Note value | Beats | Milliseconds | Hertz |
|---|---|---|---|
| Whole note | 4 | 1702.1 | 0.59 |
| Half note | 2 | 851.1 | 1.18 |
| Dotted quarter | 1.5 | 638.3 | 1.57 |
| Quarter note (one beat) | 1 | 425.5 | 2.35 |
| Quarter triplet | 0.667 | 283.7 | 3.53 |
| Dotted eighth | 0.75 | 319.1 | 3.13 |
| Eighth note | 0.5 | 212.8 | 4.7 |
| Eighth triplet | 0.333 | 141.8 | 7.05 |
| Dotted sixteenth | 0.375 | 159.6 | 6.27 |
| Sixteenth note | 0.25 | 106.4 | 9.4 |
| Sixteenth triplet | 0.167 | 70.9 | 14.1 |
| Thirty-second note | 0.125 | 53.2 | 18.8 |
Half time 70.5 BPM · double time 282 BPM. Every row is one beat (425.5 ms) times the fraction in the second column.
Closest in key and tempo
- Rockin’ You EternallyLeon WareB♭ major141BPM
- It Takes TwoRod Stewart duet with Tina TurnerB♭ major141BPM
- Hey, That’s No Way to Say GoodbyeLeonard CohenB♭ major140BPM
- Raining in BaltimoreCounting CrowsB♭ major140BPM
- ApplauseLady GagaB♭ major140BPM
- TortureDanny BrownB♭ major140BPM
- Still on My MindDidoB♭ major140BPM
- Break It (Go)Danny BrownB♭ major140BPM
- As Long as You Love MeJustin Bieber feat. Big SeanB♭ major140BPM
- Island GirlElton JohnB♭ major140BPM
Recordings in B flat major, ordered by how near their tempo is to 141 BPM. A calculation, not a recommendation.
All songs in B flat majorAll songs at 141 BPMB♭ major at 140–149 BPMDaft Punk
MusicBrainz collapses 2 recording ids into this one. Recording id 007e7a6d-944d-4046-96f8-615aad34837c.