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262 independent analyses of this recording were submitted to AcousticBrainz. A bare majority of them — 53% — put it in A major, a key signature of 3 sharps. The tempo printed above is the median of the 262 readings; 53% of them land within 2% of it, and the middle eight tenths of them run from 123.8 to 135.7 BPM.

At 126 BPM one beat lasts 476.2 milliseconds, so a sixteenth note is 119 ms and a dotted eighth 357.1 ms — the delay times for this recording. Counted half as fast it is 63 BPM, counted twice as fast 252. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 434.2 Hz, which is 23 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 4.89 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 0.676 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 major; the ones listed below are the closest in tempo.