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GanJam for Jazz Orchestra (Full Score): Jazz Ensembles

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GanJam for Jazz Orchestra (Full Score) Cover Image
GanJam for Jazz Orchestra (Full Score): Jazz Ensembles

GanJam for Jazz Orchestra (Full Score): Jazz Ensembles

For 2 ASax., 2 TSax., 3 Tpt., 2 Tbn., Pno., Gtr., Db. and Drums

By Jelly Roll Morton / arr. Jelly Roll Morton / ed. James Dapoogny

Item: 98-EP68279
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Description

Jelly Roll Morton (1890-1941) was a great American composer who claimed to have been "The Inventor of Jazz" - he certainly was one of the first jazz pianists to notate music.

This jazz "big band" arrangement dates from early 1939 when Morton hoped to make a comeback in the popular music scene of New York, but health problems kept him from performing; so the five arrangements he did of his works for this instrumentation have languished in obscurity until now, with the publication of this work. The instrumentation reflects the band size popular in the 1930s (four saxophones, six brass and four rhythm) and is not typical of the music he performed and published in his heyday in the 1920s.

Also unusual, notes the editor: "Unique in Morton's output, GanJamtakes him beyond his usual melodic and , particularly, harmonic means. The harmonic language here is unlike that in any other Morton work; it is obviously meant to be unsettled tonally for much of the time and even to produce a tentative conclusion."

With prefaces by Alfred Lemmon, Director of The Williams Research Center of The Historic New Orleans Collection, and James Dapogny, the editor of this work.

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Additional Details
Series: Edition Peters
Publisher: Edition Peters
Page Count: 36
ISBN10: 0-30-075735-2
ISBN13: 979-0-3007-5735-3
SKU: 98-EP68279

More about this title

About the Composer: Jelly Roll Morton

Jelly Roll Morton (1890-1941) stands as one of the earliest jazz composers to systematically notate his music, elevating jazz from improvisation to written composition at a time when few took the form seriously. A virtuoso pianist and bandleader, he developed the New Orleans jazz sound through his work with small ensembles in the 1920s, recording landmark sides that influenced generations of musicians and remain essential documents of early jazz history.

By the late 1930s, Morton's prominence had faded as big band swing dominated popular music. GanJam represents his late attempt to reclaim relevance by composing for the larger orchestral format, resulting in a work that departs markedly from his earlier harmonic language and melodic vocabulary. The five big band arrangements he created during this period remained unpublished until recently, offering a glimpse into how Morton adapted his compositional voice to meet contemporary ensemble demands.

Why we love this

GanJam grants students direct access to a work by one of jazz's foundational figures, performed at a scale (big band, not small combo) that changed jazz entirely during the swing era. The editor's observation that Morton deliberately stretches his harmonic language here makes this arrangement a genuine composition study, not simply a vehicle for swing style; players encounter tonal ambiguity and harmonic inquiry that feel distinctly modern, even now. Programming this piece signals serious engagement with jazz history while delivering genuine musical challenge.

What to expect

GanJam feels exploratory and restless, moving through harmonic territory that resists easy resolution. There's a searching quality throughout, with Morton trying on new harmonic colors against the period-appropriate big band instrumentation, creating a piece that sounds both rooted in 1939 and genuinely unsettled.

Who it's for

Jazz ensembles with strong sight-reading skills and harmonic understanding. The full score and the unusual harmonic language demand directors and players ready to engage with composition history, not just execute swing style.

How to get the most out of it

  • Study the harmonic language closely as a section. The editor notes that Morton intentionally creates tonal unrest here; resistance to the changes indicates you're reading them correctly, not failing. Lock into those shifts together.
  • Reference the editor's prefaces before rehearsal. Understanding Morton's deliberate harmonic choices and the 1939 context will help you voice the arrangement with intention rather than swing style autopilot.
  • Balance ensemble blend against clarity of inner voices. Big band writing from this period often obscures the countermelody work; listen for what the brass and saxophones are trading with each other.
  • Commit to the tentative harmonic conclusion. Morton chose an unsettled ending deliberately. Resist the urge to resolve it or make it feel 'complete.'

How to use it

Program GanJam alongside other big band arrangements from the late 1930s to show how individual composers adapted to the swing era's demands. Alternatively, frame it as a centerpiece for a concert exploring early jazz composition and arrangement, pairing it with small ensemble Morton recordings to illustrate his evolution across four decades.

Skills your students will build

  • Reading jazz chord symbols in progressions with extended and altered harmonies
  • Balancing ensemble blend while maintaining clarity of countermelodic lines in big band voicings
  • Understanding harmonic function when tonality is deliberately destabilized
  • Interpreting historical jazz arranging practices from the swing era
  • Responding to harmonic ambiguity with intentional phrasing and articulation choices

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