Bajo Sexto

Bajo sexto (Spanish: "sixth bass") is a Mexican string instrument with 12 strings in 6 double courses. A closely related instrument is the bajo quinto (Spanish: "fifth bass") which has 10 strings in 5 double courses.

In playing, the left hand holds the strings against frets on a fingerboard, while the right hand plucks the strings. When played in older styles of music where the instrument assumes the role of a bass, the strings are usually plucked with the fingers. In modern chordal and melodic styles, a pick is frequently used.

The history of the bajo sexto is somewhat unclear. There are few written sources, and until very recently most music dictionaries and encyclopedias didn't even mention the instrument. A few contemporary researchers have been working from oral sources—living players and luthiers—to tracing the background of the instrument.

In the 17th and 18th centuries, Mexican artisans built several types of instruments with double strings in three, four, five, six, seven and eight courses, influenced by their Spanish ancestors. Descendants of these instruments are bandolon, guitarra séptima, quinta huapanguera, jarana jarocha, concheros string instruments and guitarra chamula, among others.

The manufacture of bajo quinto and sexto reached a peak in quality and popularity in the 19th century in Southern Mexico, in the states of Guerrero, Michoacán, Morelos, Puebla, Oaxaca and Tlaxcala.

Near the end of the 19th century the bajo sexto began to migrate northwards, where it became a popular instrument for weddings and dances such as the bailes de regalos (popular between 1870 and 1930). In these settings it was usually played along with a set of small tom-tom drums.

The 1930s saw the rise of conjunto music and the instruments of choice for this developing style were accordion and bajo sexto. At this time the bajo sexto functioned primarily as a bass instrument, providing a strong rhythmic foundation supporting the solo accordion. In the late 1940s string bass (and later, electric bass) was added to the instruments, and in the 1950s, drums, completing the modern conjunto ensemble. The inclusion of bass and drums freed the bajo sexto from exclusively rhythmic bass duties, and bajo players began experimenting with chords, counter rhythms, and melodic lines.

...
Wikipedia