Don Byas “Be-Bop”

Discographic Information

Instrument ts
Total Duration 52.7 s
Position in Track 00:30-01:23
Album Title Jazz Gallery, Dizzy Gillespie, CD 1
Label BMG/Makin’ Friends records (74321 14165 2)
Recording Date 1945-01-09
Line Up Dizzy Gillespie (tp); Trummy Young (tb); Don Byas (ts); Clyde Hart (p); Oscar Pettiford (b); Shelly Mane (dr)
Key F-min
Signature 4/4
Groove/Feel SWING
Tonality Class FUNCTIONAL
MusicBrainz ID
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Piano Roll



Download MIDI File


Chord changes of solo:

A1: ||F- Gm7b5 |F-/Ab Bb-6 |F-/C   |Gm7b5 C7 |F- Gm7b5 |F-/Ab Bb-6 |F-/C   |Gm7b5 F- ||
A2: ||F-7 Gm7b5 |F-/Ab Bb-6 |F-/C   |Gm7b5 C7 |F- Gm7b5 |F-/Ab Bb-6 |F-/C   |Gm7b5 F- ||
B1: ||F-7   |Bb79#   |Ebj7   |Ebj7   |Eb-7   |Ab79#   |Dbj7   |Gm7b5 C79b ||
A3: ||F-7 Gm7b5 |F-/Ab Bb-6 |F-/C   |Gm7b5 C7 |F- Gm7b5 |F-/Ab Bb-6 |F-/C   |C7 F- ||



Number of Notes 336  
Number of Bars 63 bars  
Number of Choruses 2  
Mean Tempo 288.6 (UP)  
Event Density 6.37 Notes/s  
Metrical Event Density 5.3 Notes/bar  
Median Swing Ratio 1.34:1 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 26.5 % Share of syncopated notes.
Ambitus 49-77 (28) Min/max and range of MIDI pitches.
Extrema ratio 35.1 % 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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