Tumbao
In music of Afro-Cuban origin, tumbao is the basic rhythm played on the bass. In North America, the basic conga drum pattern used in popular music is also called tumbao. In the contemporary form of Cuban popular dance music known as timba, piano guajeos are known as tumbaos.
Bass pattern
Clave-neutral
The tresillo pattern is the rhythmic basis of the ostinato bass tumbao in Cuban son-based musics, such as son montuno, mambo, salsa, and Latin jazz.
Often the last note of the measure is held over the downbeat of the next measure. In this way, only the two offbeats of tresillo are sounded. The first offbeat is known as bombo, and the second offbeat (last note) is sometimes referred to as ponche. The following example is written in cut-time (2/2).
Clave-aligned
Arsenio Rodríguez's group introduced bass tumbaos that have a specific alignment with clave. The 2-3 bass line of "Dame un cachito pa' huele" (1946) coincides with three of the clave's five strokes.Listen to a midi version of the bass line for "Dame un cachito pa' huele."
David García Identifies the accents of "and-of-two" (in cut-time) on the three-side, and the "and-of-four" (in cut-time) on the two-side of the clave, as crucial contributions of Rodríguez's music. The two offbeats are present in the following 2-3 bass line from Rodríguez's "Mi chinita me botó" (1944).
