dancers, as I had observed them, took the number in stride. I began to suspect that there was something Negroid in that beat." After noting a similar reaction to the same rhythm in "La Paloma", Handy included this rhythm in his "St. Louis Blues," the instrumental copy of "Memphis Blues," the chorus of "Beale Street Blues," and other compositions." Jelly Roll Morton considered the tresillo/habanera (which he called the Spanish tinge) to be an essential ingredient of jazz. Morton stated, "Now in one of my earliest tunes, 'New Orleans Blues', you can notice the Spanish tinge. In fact, if you can't manage to put tinges of Spanish in your tunes, you will never be able to get the right seasoning, I call it, for jazz—Morton (1938: Library of Congress Recording)." An excerpt of "New Orleans Blues" is shown below. In the excerpt, the left hand plays the tresillo rhythm, while the right hand plays variations on cinquillo. Although the origin of jazz syncopation may never be known, there's evidence that the habanera/tresillo existed at its conception. Buddy Bolden, the first known jazz musician, is credited with creating the big four, a habanera-based pattern. The big four (below) was the first syncopated bass drum pattern to deviate from the standard on-the-beat march. As the example below shows, the second half of the big four pattern is the habanera rhythm. In Early Jazz: Its Roots and Musical Development, Gunther Schuller states, The Cuban influence is evident in many pre-1940s jazz tunes, but rhythmically they are all based on single-celled motifs such as tresillo, and do not contain an overt two-celled, clave-based structure. "Caravan", written by Juan Tizol and first performed in 1936, is an example of an early pre-Latin jazz composition. It is not clave-based. On the other hand, jazzy renditions of Don Azpiazú's "The Peanut Vendor" ("El manicero") by Louis Armstrong (1930), Duke Ellington (1931), and Stan Kenton (1948), are all firmly in-clave since the 2-3 guajeo provides the primary counterpoint to the melody throughout the entire song. Mario Bauzá and Machito The consensus among musicians and musicologists is that the first jazz piece to be based in-clave was "Tanga" (1943) composed by Cuban-born Mario Bauza and recorded by Machito and his Afro-Cubans. "Tanga" began humbly as a spontaneous descarga (Cuban jam session) with jazz solos superimposed on top. The right hand of the "Tanga" piano guajeo is in the style