Hawkwind · In Search of Space

Silver Machine

Silver Machine is in E flat major at 130.4 beats per minute.

Tempo

130 BPM · Allegromedian of 146 analyses · 130.4–146.5 across the middle eight tenths

Key: E♭ major3 flats · the key most of the analyses agreed on
Agreement: 71%share of analyses that agreed
Analyses: 146people who ran the extractor
One beat: 460.1milliseconds, 60,000 ÷ BPM
Tuning: 433.7Hz · -25 cents from A 440
Dynamics: 2.95dB the level wanders from its average
Loudness: 0.933Essentia's 0–1 scale, not dB
Danceability: 1.09Essentia'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

146 independent analyses of this recording were submitted to AcousticBrainz. A bare majority of them — 71% — put it in E flat major, a key signature of 3 flats. The tempo printed above is the median of the 146 readings; 80% of them land within 2% of it, and the middle eight tenths of them run from 130.4 to 146.5 BPM.

At 130.4 BPM one beat lasts 460.1 milliseconds, so a sixteenth note is 115 ms and a dotted eighth 345.1 ms — the delay times for this recording. Counted half as fast it is 65.2 BPM, counted twice as fast 260.8. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 433.7 Hz, which is 25 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 2.95 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 E 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 E♭ major

Each of these differs from E♭ 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 130 BPM

Note value	Beats	Milliseconds	Hertz
Whole note	4	1840.5	0.54
Half note	2	920.2	1.09
Dotted quarter	1.5	690.2	1.45
Quarter note (one beat)	1	460.1	2.17
Quarter triplet	0.667	306.7	3.26
Dotted eighth	0.75	345.1	2.9
Eighth note	0.5	230.1	4.35
Eighth triplet	0.333	153.4	6.52
Dotted sixteenth	0.375	172.5	5.8
Sixteenth note	0.25	115	8.69
Sixteenth triplet	0.167	76.7	13.04
Thirty-second note	0.125	57.5	17.39

Half time 65.2 BPM · double time 260.8 BPM. Every row is one beat (460.1 ms) times the fraction in the second column.

Closest in key and tempo

Recordings in E flat major, ordered by how near their tempo is to 130 BPM. A calculation, not a recommendation.

All songs in E flat major All songs at 130 BPM E♭ major at 130–139 BPM

MusicBrainz collapses 124 recording ids into this one. Recording id a01555bb-0053-46a5-86d3-a60d871c8dab.