Black Sabbath · Sabotage

Am I Going Insane (Radio)

Am I Going Insane (Radio) is in A minor at 135.2 beats per minute.

4080120160200

Tempo

135 BPM · Allegromedian of 160 analyses · 134.9–135.4 across the middle eight tenths
Key
A minorno sharps and no flats · the key most of the analyses agreed on
Agreement
97%share of analyses that agreed
Analyses
160people who ran the extractor
One beat
443.8milliseconds, 60,000 ÷ BPM
Tuning
441.5Hz · +6 cents from A 440
Dynamics
2.66dB the level wanders from its average
Loudness
0.918Essentia's 0–1 scale, not dB
Danceability
1.117Essentia'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

160 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 97% — put it in A minor, a key signature of no sharps and no flats. The tempo printed above is the median of the 160 readings; 100% of them land within 2% of it, and they barely differ at all.

At 135.2 BPM one beat lasts 443.8 milliseconds, so a sixteenth note is 110.9 ms and a dotted eighth 332.8 ms — the delay times for this recording. Counted half as fast it is 67.6 BPM, counted twice as fast 270.4. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 441.5 Hz, which is 6 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 2.66 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 0.918 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 A 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 A minor

Each of these differs from A 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 135 BPM

Note valueBeatsMillisecondsHertz
Whole note41775.10.56
Half note2887.61.13
Dotted quarter1.5665.71.5
Quarter note (one beat)1443.82.25
Quarter triplet0.667295.93.38
Dotted eighth0.75332.83
Eighth note0.5221.94.51
Eighth triplet0.333147.96.76
Dotted sixteenth0.375166.46.01
Sixteenth note0.25110.99.01
Sixteenth triplet0.1677413.52
Thirty-second note0.12555.518.03

Half time 67.6 BPM · double time 270.4 BPM. Every row is one beat (443.8 ms) times the fraction in the second column.

Closest in key and tempo

  1. Old Yellow BricksArctic MonkeysA minor135BPM
  2. MoondanceVan MorrisonA minor135BPM
  3. These DaysFoo FightersA minor135BPM
  4. PorchPearl JamA minor136BPM
  5. Jump (For My Love)The Pointer SistersA minor135BPM
  6. Babe I’m Gonna Leave YouLed ZeppelinA minor136BPM
  7. 7/11BeyoncéA minor136BPM
  8. It’s Just ForeverCage the Elephant feat. Alison MosshartA minor136BPM
  9. Cover MeBjörkA minor136BPM
  10. The One That Got AwayKaty PerryA minor134BPM

Recordings in A minor, ordered by how near their tempo is to 135 BPM. A calculation, not a recommendation.

All songs in A minorAll songs at 135 BPMA minor at 130–139 BPMBlack Sabbath

MusicBrainz collapses 1 recording id into this one. Recording id 33afd543-bb8a-4907-bb35-b0a9a9c9b409.