Lester Young “Lester Leaps In”

Discographic Information

Instrument ts
Total Duration 60.9 s
Position in Track 00:28-01:29
Album Title Lester’s Be-Bop Boogie
Label Membran Music Ltd. (222500-444/A)
Recording Date 1939-09-05
Line Up Buck Clayton (tp); Dickie Wells (tb); Count Basie (p); Freddie Green (g); Walter Page (b); Jo Jones (dr); Lester Young (ts)
Key Bb-maj
Signature 4/4
Groove/Feel SWING
Tonality Class FUNCTIONAL
MusicBrainz ID 369a52fc-8a40-42e4-954d-a09c228cd381
More Info Wikipedia

Piano Roll



Download MIDI File


Chord changes of solo:

A1: ||Bb   |Bb   |Bb   |Bb   |Bb   |Bb   |Bb   |Bb   ||
A2: ||Bb   |Bb   |Bb   |Bb   |Bb   |Bb   |Bb   |Bb   ||
B1: ||D7   |D7   |G7   |G7   |C7   |C7   |F7   |F7   ||
A3: ||Bb   |Bb   |Bb   |Bb   |Bb   |Bb   |Bb   |Bb   ||



Number of Notes 299  
Number of Bars 64 bars  
Number of Choruses 2  
Mean Tempo 251.4 (UP)  
Event Density 4.91 Notes/s  
Metrical Event Density 4.69 Notes/bar  
Median Swing Ratio 1.36:1 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 22.4 % Share of syncopated notes.
Ambitus 46-72 (26) Min/max and range of MIDI pitches.
Extrema ratio 39.1 % 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

More Info