crack jazz 

n. A piece of jazz music that involves musicians playing extremely fast runs (usually during solos) throughout the song, as if the musicians were on crack, speed, or some other stimulant drug when they recorded the song.

Listen to some Miles Davis and John Coltrane recordings if you want to listen to classic "crack jazz". For a more modern example, look up songs by the New York Big Band on Youtube.

crack jazz by Jimmy "Sax Machine" Phillips July 12, 2009

crackjazzle

blingy material to distract the world from your asscrack

or

sparkles glued to your lower back, ala tramp stamp style

Love the lowrise look, but hate the breeze in your butt crack? Add some crackjazzle to your jeans with a new product.

crackjazzle by Mrs Malice April 27, 2010