Turtle Blues

151 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 99% — put it in G major, a key signature of 1 sharp. The tempo printed above is the median of the 151 readings; 99% of them land within 2% of it, and the middle eight tenths of them run from 108.5 to 109.8 BPM.

At 109.6 BPM one beat lasts 547.4 milliseconds, so a sixteenth note is 136.9 ms and a dotted eighth 410.6 ms — the delay times for this recording. Counted half as fast it is 54.8 BPM, counted twice as fast 219.2. A score would mark that Moderato, by the ranges this site uses.

The analyses put the reference pitch of the recording at 439.7 Hz, which is 1 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 4.38 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 0.476 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 G major; the ones listed below are the closest in tempo.