Both a character theme (the "traditional 'bad-guy' cue"[2]) and situation theme,[3] it is used to herald foreboding or disaster and to represent villainy, sneakiness, or stealth. 

From the RedhotJazz Site

 The All Star Trio were a popular dance band that consisted of saxophonist Wheeler Wadsworth, pianist Victor Arden and xylophonist George Hamilton Green. The group was one of the first to record several songs that have become jazz standards such as "St. Louis Blues" , "Beale Street Blues" , "The 12th Street Rag" and the Original Dixieland Jazz Band's "Sensation". When the All Star Trio recorded with a band they were called the All Star Trio and their Orchestra.

THE RAG
The Theatre music came from the popular composers of the day, while the Rags were primarily from a group of gifted composers and performers, around the Sedalia, Missouri and New York City regions. The 'hey day' of the Rags was from the mid-1890 to, say, 1917, - the first world war, and most sheet music was for the piano. It should be noted that while "genteel" men and women did indeed play the Rags on home pianos, the real spawning ground for the Rags were the Bordellos, where Black musicians - usually barred from more legitimate occupations - did the piano playing. The very first 'true' rag, a delightful two-step dance, "Mississippi Rag" , by composer William H. Krell, was published in 1897. Another Rag composer was Charles L. Johnson, and here's his 1909 song "Kissing Bug Rag". This was the same year that the first black composer, Tom Turpin (called 'The Metronome' by his fellow musicians), published his "Harlem Rag". But the 'Rags' are not the forerunner of our dance band music, for they were too complex for dancing. Never-the-less, their steady 2/4 and 4/4 rhythm was useful in the development of simpler dances, among which were the 'Turkey Trot'; 'Camel Walk'; 'Lame Duck'; 'Bunny Hop' and the 'Grizzly Bear', (a Fanny Brice specialty during her Burlesque days). In 1912, 15 women were dismissed from their jobs at the Curtis Publishing Company in Philadelphia, PA, for dancing the Turkey Trot while on the job! These dances simply required walking around the floor in the embrace of your partner, and did not involve the strenuous exercise of a polka, etc. At the time, many folks considered the new dances immoral. Here is one typical newspaper report:

       "On March 27, in 1913 it was reported that Ed Spence, floor manager of the dance
       held at Holland, Michigan the previous Saturday night "...is in serious condition
       from 11 knife wounds as a result of trying to enforce his taboo of the 'Bunny Hug',
       the 'Turkey Trot' and like terpsichorean confections." To settle the matter,
       Mr. Spence had "stepped outside" with a young man who persisted in dancing the
       ragtime steps. Spence's wounds were a result of an argument. "