Aerosmith · Rocks

Rats in the Cellar

Rats in the Cellar is in F sharp major at 111.5 beats per minute.

Tempo

112 BPM · Moderatomedian of 137 analyses · 111.4–111.7 across the middle eight tenths

Key: F♯ major6 sharps · the key most of the analyses agreed on
Agreement: 94%share of analyses that agreed
Analyses: 137people who ran the extractor
One beat: 538.1milliseconds, 60,000 ÷ BPM
Tuning: 439.7Hz · -1 cents from A 440
Dynamics: 2.29dB the level wanders from its average
Loudness: 0.945Essentia's 0–1 scale, not dB
Danceability: 1.28Essentia'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

137 independent analyses of this recording were submitted to AcousticBrainz. Most of them — 94% — put it in F sharp major, a key signature of 6 sharps. The tempo printed above is the median of the 137 readings; 95% of them land within 2% of it, and they barely differ at all.

At 111.5 BPM one beat lasts 538.1 milliseconds, so a sixteenth note is 134.5 ms and a dotted eighth 403.6 ms — the delay times for this recording. Counted half as fast it is 55.8 BPM, counted twice as fast 223. A score would mark that Moderato, by the ranges this site uses.

The analyses put the reference pitch of the recording at 439.7 Hz, which is 1 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 2.29 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 0.945 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 F sharp 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 F♯ major

Each of these differs from F♯ 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 112 BPM

Note value	Beats	Milliseconds	Hertz
Whole note	4	2152.5	0.46
Half note	2	1076.2	0.93
Dotted quarter	1.5	807.2	1.24
Quarter note (one beat)	1	538.1	1.86
Quarter triplet	0.667	358.7	2.79
Dotted eighth	0.75	403.6	2.48
Eighth note	0.5	269.1	3.72
Eighth triplet	0.333	179.4	5.58
Dotted sixteenth	0.375	201.8	4.96
Sixteenth note	0.25	134.5	7.43
Sixteenth triplet	0.167	89.7	11.15
Thirty-second note	0.125	67.3	14.87

Half time 55.8 BPM · double time 223 BPM. Every row is one beat (538.1 ms) times the fraction in the second column.

Closest in key and tempo

Recordings in F sharp major, ordered by how near their tempo is to 112 BPM. A calculation, not a recommendation.

All songs in F sharp major All songs at 112 BPM F♯ major at 110–119 BPM Aerosmith

MusicBrainz collapses 47 recording ids into this one. Recording id c82b1d82-b269-4873-a878-3bec31141fb6.