(Sp.: mocha, ‘to cut’)
An ensemble of gourd (puro) trumpets of various sizes, used in the Chota river valley of Imbabura and Carchi provinces of Ecuador. Formed in the late 19th century by Afro-Ecuadorians without access to Western military band instruments, the ensemble includes several puros (calabazas) and pencos (cabuyos) along with other instruments. Puros, about 30 to 60 cm long, are made by cutting a rectangular blowhole near the stem end of a dried gourd and opening the distal end to form a sort of bell. Various sizes provide lead, alto, and tenor ranges. Pencos are made of hollow agave stems about 30 cm long and 7 cm in diameter, with a blowhole cut near one end on a side. The similar chile frito, an ensemble of central Guerrero, Mexico, consists of imitation band instruments made of assembled sections of gourds.
C.A. Coba Andrade: ‘Instrumentos musicales ecuatorianos’, ...