ZZ Top · Afterburner

Sleeping Bag

Sleeping Bag is in C major at 112.1 beats per minute.

4080120160200

Tempo

112 BPM · Moderatomedian of 270 analyses · 112.1–112.3 across the middle eight tenths
Key
C majorno sharps and no flats · the key most of the analyses agreed on
Agreement
63%share of analyses that agreed
Analyses
270people who ran the extractor
One beat
535.2milliseconds, 60,000 ÷ BPM
Tuning
441Hz · +4 cents from A 440
Dynamics
3.14dB the level wanders from its average
Loudness
0.93Essentia's 0–1 scale, not dB
Danceability
1.288Essentia'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

270 independent analyses of this recording were submitted to AcousticBrainz. A bare majority of them — 63% — put it in C major, a key signature of no sharps and no flats. The tempo printed above is the median of the 270 readings; 100% of them land within 2% of it, and they barely differ at all.

At 112.1 BPM one beat lasts 535.2 milliseconds, so a sixteenth note is 133.8 ms and a dotted eighth 401.4 ms — the delay times for this recording. Counted half as fast it is 56.1 BPM, counted twice as fast 224.2. A score would mark that Moderato, by the ranges this site uses.

The analyses put the reference pitch of the recording at 441 Hz, which is 4 cents above 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 3.14 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 0.93 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 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 C major

Each of these differs from C 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 valueBeatsMillisecondsHertz
Whole note42140.90.47
Half note21070.50.93
Dotted quarter1.5802.91.25
Quarter note (one beat)1535.21.87
Quarter triplet0.667356.82.8
Dotted eighth0.75401.42.49
Eighth note0.5267.63.74
Eighth triplet0.333178.45.61
Dotted sixteenth0.375200.74.98
Sixteenth note0.25133.87.47
Sixteenth triplet0.16789.211.21
Thirty-second note0.12566.914.95

Half time 56.1 BPM · double time 224.2 BPM. Every row is one beat (535.2 ms) times the fraction in the second column.

Closest in key and tempo

  1. Summer in the CityThe Lovin’ SpoonfulC major112BPM
  2. Turn It AgainRed Hot Chili PeppersC major112BPM
  3. Us Against the WorldColdplayC major112BPM
  4. I’ll Tumble 4 YaCulture ClubC major112BPM
  5. A Brand New MeAretha FranklinC major112BPM
  6. Sysyphus, Part 2Richard WrightC major112BPM
  7. These Are the Days of Our LivesQueenC major113BPM
  8. FallingFlorence + the MachineC major113BPM
  9. I’m Your AngelCéline Dion duet with R. KellyC major113BPM
  10. My Shining HourJohn ColtraneC major113BPM

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

All songs in C majorAll songs at 112 BPMC major at 110–119 BPMZZ Top

MusicBrainz collapses 17 recording ids into this one. Recording id 8e2f3c24-66e4-4b8f-bb41-6e55a24c21b3.