Air · Talkie Walkie

Biological

Biological is in C minor at 150 beats per minute.

Tempo

150 BPM · Allegromedian of 184 analyses · 150–150.1 across the middle eight tenths

Key: C minor3 flats · the key most of the analyses agreed on
Agreement: 97%share of analyses that agreed
Analyses: 184people who ran the extractor
One beat: 400milliseconds, 60,000 ÷ BPM
Tuning: 441.8Hz · +7 cents from A 440
Dynamics: 3.11dB the level wanders from its average
Loudness: 0.848Essentia's 0–1 scale, not dB
Danceability: 1.014Essentia'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

184 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 97% — put it in C minor, a key signature of 3 flats. The tempo printed above is the median of the 184 readings; 99% of them land within 2% of it, and they barely differ at all.

At 150 BPM one beat lasts 400 milliseconds, so a sixteenth note is 100 ms and a dotted eighth 300 ms — the delay times for this recording. Counted half as fast it is 75 BPM, counted twice as fast 300. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 441.8 Hz, which is 7 cents above 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 3.11 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 0.848 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 C 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 C minor

Each of these differs from C 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 150 BPM

Note value	Beats	Milliseconds	Hertz
Whole note	4	1600	0.63
Half note	2	800	1.25
Dotted quarter	1.5	600	1.67
Quarter note (one beat)	1	400	2.5
Quarter triplet	0.667	266.7	3.75
Dotted eighth	0.75	300	3.33
Eighth note	0.5	200	5
Eighth triplet	0.333	133.3	7.5
Dotted sixteenth	0.375	150	6.67
Sixteenth note	0.25	100	10
Sixteenth triplet	0.167	66.7	15
Thirty-second note	0.125	50	20

Half time 75 BPM · double time 300 BPM. Every row is one beat (400 ms) times the fraction in the second column.

Closest in key and tempo

Recordings in C minor, ordered by how near their tempo is to 150 BPM. A calculation, not a recommendation.

All songs in C minor All songs at 150 BPM C minor at 150–159 BPM Air

MusicBrainz collapses 1 recording id into this one. Recording id af8c7a88-dd3f-4130-b147-6cf9dd816147.