The term, "jazz," of unknown exact origin, signifies general characteristics of "improvisation, syncopation, and usually a regular or forceful rhythm" (Apple Dictionary 2.1.3).  The phrase, "jazz music," may prove more culturally flexible and transcendent than "improvisational music" or "dance music," because it often combines those two attributes, and because "jazz" is just four letters long with the uncommon two Z's.  My personal iceberg of "jazz music" remains mostly submerged, yet is just beginning to melt.

SONATA IN FUNK MINOR (2006)

    for small- or medium-sized combo

MOONLIGHT (2002/2005)

    for steel band
    OR

    for two pianos w/ bass & drums

NATURAL SELECTION (2001)

    for large ensemble:
    5 saxes, 4 trumpets, 4 trombones, piano, bass, drums, percussion

FANFARE AND PROCESSIONAL (2001)
    for medium-sized combo:

    clarinet, ATB saxophones, marimba, bass, drums, congas