Led Zeppelin · Led Zeppelin III

Immigrant Song

Immigrant Song is in B minor at 112.8 beats per minute.

Tempo

113 BPM · Moderatomedian of 414 analyses · 112.6–113.3 across the middle eight tenths

Key: B minor2 sharps · the key most of the analyses agreed on
Agreement: 92%share of analyses that agreed
Analyses: 414people who ran the extractor
One beat: 531.9milliseconds, 60,000 ÷ BPM
Tuning: 439.5Hz · -2 cents from A 440
Dynamics: 2.82dB the level wanders from its average
Loudness: 0.912Essentia's 0–1 scale, not dB
Danceability: 1.176Essentia'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

414 independent analyses of this recording were submitted to AcousticBrainz. Most of them — 92% — put it in B minor, a key signature of 2 sharps. The tempo printed above is the median of the 414 readings; 95% of them land within 2% of it, and they barely differ at all.

At 112.8 BPM one beat lasts 531.9 milliseconds, so a sixteenth note is 133 ms and a dotted eighth 398.9 ms — the delay times for this recording. Counted half as fast it is 56.4 BPM, counted twice as fast 225.6. A score would mark that Moderato, by the ranges this site uses.

The analyses put the reference pitch of the recording at 439.5 Hz, which is 2 cents below concert A at 440 Hz — close enough to standard that a tuner would not argue. That is a fact about this transfer of the music, not about how it was played.

The dynamic complexity of the recording measures 2.82 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 0.912 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 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 B minor

Each of these differs from B 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 113 BPM

Note value	Beats	Milliseconds	Hertz
Whole note	4	2127.7	0.47
Half note	2	1063.8	0.94
Dotted quarter	1.5	797.9	1.25
Quarter note (one beat)	1	531.9	1.88
Quarter triplet	0.667	354.6	2.82
Dotted eighth	0.75	398.9	2.51
Eighth note	0.5	266	3.76
Eighth triplet	0.333	177.3	5.64
Dotted sixteenth	0.375	199.5	5.01
Sixteenth note	0.25	133	7.52
Sixteenth triplet	0.167	88.7	11.28
Thirty-second note	0.125	66.5	15.04

Half time 56.4 BPM · double time 225.6 BPM. Every row is one beat (531.9 ms) times the fraction in the second column.

Closest in key and tempo

Recordings in B minor, ordered by how near their tempo is to 113 BPM. A calculation, not a recommendation.

All songs in B minor All songs at 113 BPM B minor at 110–119 BPM Led Zeppelin

MusicBrainz collapses 258 recording ids into this one. Recording id 2cfad207-3f55-4aec-8120-86cf66e34d59.