Warszawa

245 independent analyses of this recording were submitted to AcousticBrainz. A bare majority of them — 54% — put it in B flat minor, a key signature of 5 flats. The tempo printed above is the median of the 245 readings; 78% of them land within 2% of it, and the middle eight tenths of them run from 77.1 to 154.7 BPM.

At 154.3 BPM one beat lasts 388.9 milliseconds, so a sixteenth note is 97.2 ms and a dotted eighth 291.6 ms — the delay times for this recording. Counted half as fast it is 77.2 BPM, counted twice as fast 308.6. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 440.3 Hz, which is 1 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 4.01 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 0.357 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 B flat minor; the ones listed below are the closest in tempo.