My Boy Builds Coffins

179 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 100% — put it in A minor, a key signature of no sharps and no flats. The tempo printed above is the median of the 179 readings; 100% of them land within 2% of it, and they barely differ at all.

At 122 BPM one beat lasts 491.8 milliseconds, so a sixteenth note is 123 ms and a dotted eighth 368.9 ms — the delay times for this recording. Counted half as fast it is 61 BPM, counted twice as fast 244. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 439.2 Hz, which is 3 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 4.56 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 0.904 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.