Bob Berg “Nature of the Beast”

Discographic Information

Instrument ts
Total Duration 196.9 s
Position in Track 01:28-04:45
Album Title Enter The Spirit
Label GRP Records / Stretch Records (STD-1105)
Recording Date 1993
Line Up Bob Berg (ts); David Kikoski (p); Jim Beard (rhodes); James Genus (b); Dennis Chambers (dr)
Key C-min
Signature 4/4
Groove/Feel LATIN
Tonality Class MODAL
MusicBrainz ID 9eaeabcd-b200-4b56-9555-99a4eeaf40da
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Piano Roll



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Chord changes of solo:

A1: ||Fsus   ||



Number of Notes 964  
Number of Bars 108 bars  
Number of Choruses 1  
Mean Tempo 131.8 (MEDIUM)  
Event Density 4.9 Notes/s  
Metrical Event Density 8.9 Notes/bar  
Median Swing Ratio 0.79:1 Ratio of longer to shorter eighth of beats with binary subdivision.
Metrical Centroid 2+ Mean concentration of events in the bar, rounded and normalized to 4/4.
Syncopicity 39.7 % Share of syncopated notes.
Ambitus 44-81 (37) Min/max and range of MIDI pitches.
Extrema ratio 45.3 % Share of notes with direction reversal (i.e, minima and maxima of pitch contour).

Extended Chordal Diatonic Pitch Class Histogram


Extended Chordal Diatonic Pitch Class is calculated in reference to the underlying chord.

Pitch Class Histogram


MIDI Pitch Histogram


Semitone Interval Histogram


Refined Contour Histogram


Also known as “fuzzy intervals” or interval classification. See here for definition of classes

Metrical Circle Map (N=48) Histogram


Metrical circle maps divides the bar duration into equal sized bins (48 in this case) and maps metrical positions to the corresponding bin. (Labels normalized to 4/4 measure).

Duration Class (Abs. and Rel.) Histogram


Relative duration classes are based on the duration of the beat. Absolute duration classes are based on 120 bpm. See here for a definition of classes.

Midlevel Analysis Main Types Histogram


Midlevel analysis is a qualitative annotation system of playing ideas, with nine different main categories, as defined in our paper

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