We Will Rock You

162 independent analyses of this recording were submitted to AcousticBrainz. Fewer than half of them — 32% — put it in A minor, a key signature of no sharps and no flats. The tempo printed above is the median of the 162 readings; 9% of them land within 2% of it, and the middle eight tenths of them run from 81.3 to 94 BPM. That is a recording the detector cannot settle on — the readings are spread far enough that the median is a summary of a disagreement rather than a measurement anybody should trust to the decimal.

At 87 BPM one beat lasts 689.7 milliseconds, so a sixteenth note is 172.4 ms and a dotted eighth 517.2 ms — the delay times for this recording. Counted half as fast it is 43.5 BPM, counted twice as fast 174. A score would mark that Andante, by the ranges this site uses.

The analyses put the reference pitch of the recording at 435.7 Hz, which is 17 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 4.85 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 0.831 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.