And here, to top things up is
http://www.tcnj.edu/~kpearson/syllabi/jazz.html
with the following:
jazz (‘jaz) orig. U.S. slang. Also jas, jascz, jass, jasz, jaz. [origin unknown: while there is suggested derivations]
*1825[from crowd chants to a New Orleans dancing slave, Jasper. “Come on Jass!” or a black musician named Jazbo Brown with a similar chant.] 1860[from jass, jasm, or gism-slang expressions for speed and energy in athletic pursuits, and dance; probably in sexual contexts as well] 1895[from Mississippi Ragtime drummer, Charles or Chaz Washington]1904
[from a New Orleans band conductor Mr. Razz] 1905[a mispronunciation of Razz, a New Orleans Negro band]1910[from Charles or Chas Alexander’s Ragtime band] [from chasse dance step][from the Arab, jazib, meaning; one who allures] [from the African, jazia, meaning; the sound of distant drums] [from African, tshiluba jaja, meaning; to cause to dance, or Mandingo jasi and Wolof yees, meaning; to step out of character][from African ,Tenne yas, meaning to be extremely lively or energetic] [from Hindu, jasba, meaning; ardent desire] [from French, jaser, meaning; to pep up] slang phonology- words that end in /z/ have been representative for slang. Examples include fuzz= police, razz= heckle, jazz= hot music.
Now go and take your pick.
Actually, I think the thread was supposed to be about boogie…oh, my. Lordie, Lord.