Don Byas “Harvard Blues”

Discographic Information

Instrument ts
Total Duration 29.2 s
Position in Track 00:35-01:04
Album Title Moon Nocturne
Label Membran Music Ltd. (222414-444/A)
Recording Date 1945-08-30
Line Up Don Byas (ts); Erroll Garner (p); Slam Stewart (b); Doc West (dr)
Key Db-maj
Signature 4/4
Groove/Feel SWING
Tonality Class BLUES
MusicBrainz ID b5147d0f-81ce-4834-9097-d8e486d9e7a2
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Piano Roll



Download MIDI File


Chord changes of solo:

A1: ||Db7   |Gb7 Go |Db Db7 |Bb-7 Db7 |Gb7   |Gb7 Go |Db7   |Db7 Ao |Ab7   |Gb7   |Db7   |Db7   ||
I1: ||NC   ||



Number of Notes 72  
Number of Bars 12 bars  
Number of Choruses 1  
Mean Tempo 98.5 (MEDIUM SLOW)  
Event Density 2.46 Notes/s  
Metrical Event Density 5.99 Notes/bar  
Median Swing Ratio 1.84:1 Ratio of longer to shorter eighth of beats with binary subdivision.
Metrical Centroid 3 Mean concentration of events in the bar, rounded and normalized to 4/4.
Syncopicity 29.2 % Share of syncopated notes.
Ambitus 46-65 (19) Min/max and range of MIDI pitches.
Extrema ratio 52.8 % 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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