Roy Eldridge “The Gasser”

Discographic Information

Instrument tp
Total Duration 71.1 s
Position in Track 00:00-01:11
Album Title Minor Jive
Label History - (Trumpets of Jericho)s (20.1973-HI)
Recording Date 1943-11-16
Line Up Roy Eldridge (tp); Joe-Andrew Gardner (as); Abrams Quebec-Tom Archia (ts); Rozelle Gayle (p); Theodore Sturgis (b); Harold West (dr)
Key Ab-maj
Signature 4/4
Groove/Feel SWING
Tonality Class FUNCTIONAL
MusicBrainz ID
More Info Wikipedia

Piano Roll



Download MIDI File


Chord changes of solo:

A1: ||F7   |F7   |F7   |F7   |Bb7   |Bb7   |Bb7   |Bb7   |Eb7   |Eb7   |Eb7   |Eb7   |Ab6   |Bb-7 Eb7 |Ab6   |Gm7b5 C7 ||
B1: ||F7   |F7   |F7   |F7   |Bb7   |Bb7   |Bb7   |Bb7   |F-7   |Gm7b5 C7 |F-7   |Bb-7 Eb7 |Ab6 G7 |Gb7 F7 |Bb7 Eb7 |Ab6   ||



Number of Notes 418  
Number of Bars 68 bars  
Number of Choruses 2  
Mean Tempo 231.3 (UP)  
Event Density 5.88 Notes/s  
Metrical Event Density 6.1 Notes/bar  
Median Swing Ratio 1.4:1 Ratio of longer to shorter eighth of beats with binary subdivision.
Metrical Centroid 1+ Mean concentration of events in the bar, rounded and normalized to 4/4.
Syncopicity 24.4 % Share of syncopated notes.
Ambitus 58-84 (26) Min/max and range of MIDI pitches.
Extrema ratio 52.6 % 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