Polly

200 independent analyses of this recording were submitted to AcousticBrainz. Fewer than half of them — 46% — put it in C major, a key signature of no sharps and no flats. The tempo printed above is the median of the 200 readings; 23% of them land within 2% of it, and the middle eight tenths of them run from 121 to 144.8 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 125.8 BPM one beat lasts 476.9 milliseconds, so a sixteenth note is 119.2 ms and a dotted eighth 357.7 ms — the delay times for this recording. Counted half as fast it is 62.9 BPM, counted twice as fast 251.6. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 442.3 Hz, which is 9 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 3.51 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 0.902 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.