Charlie Parker “Steeplechase”

Discographic Information

Instrument as
Total Duration 44.5 s
Position in Track 00:45-01:30
Album Title Boss Bird Disc 3
Label Proper Records (P1283)
Recording Date 1948-09-24
Line Up Miles Davis (tp); Charlie Parker (as); John Lewis (p); Curley Russell (b); Max Roach (dr)
Key Bb-maj
Groove/Feel SWING
Tonality Class FUNCTIONAL
MusicBrainz ID
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Piano Roll



Download MIDI File


Chord changes of solo:

A1: ||Bbj7 G7 |C-7 F7 |Bbj7 G7 |C-7 F7 |Bbj7 Bb7 |Eb6 Eb-7 |Bbj7 G7 |C-7F7Bbj7 ||
A2: ||Bb G7 |C-7 F7 |Bbj7 G7 |C-7 F7 |Bbj7 Bb7 |Eb6 Eb-7 |Bbj7 G7 |C-7F7Bbj7 ||
B1: ||D7   |D7   |G7   |G7   |C7   |C7   |F7   |F7   ||
A3: ||Bbj7 G7 |C-7 F7 |Bbj7 G7 |C-7 F7 |Bbj7 Bb7 |Eb6 Eb-7 |Bbj7 G7 |C-7F7Bbj7 ||



Number of Notes 228  
Number of Bars 32 bars  
Number of Choruses 1  
Mean Tempo 175.2 (MEDIUM UP)  
Event Density 5.12 Notes/s  
Metrical Event Density 7.02 Notes/bar  
Median Swing Ratio 2.04:1 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 33.3 % Share of syncopated notes.
Ambitus 55-79 (24) Min/max and range of MIDI pitches.
Extrema ratio 40.4 % 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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