Thunder Road

148 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 99% — put it in F major, a key signature of 1 flat. The tempo printed above is the median of the 148 readings; 12% of them land within 2% of it, and the middle eight tenths of them run from 117.9 to 135.9 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 128.8 BPM one beat lasts 465.8 milliseconds, so a sixteenth note is 116.5 ms and a dotted eighth 349.4 ms — the delay times for this recording. Counted half as fast it is 64.4 BPM, counted twice as fast 257.6. A score would mark that Allegro, by the ranges this site uses.

The analyses put the reference pitch of the recording at 440.8 Hz, which is 3 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 4.6 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 0.642 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 F major; the ones listed below are the closest in tempo.