Sometimes called Bastos, the Sanka is the baritone, one octave lower than the Malta and two octaves lower than the Chuli. The Sanka has the deep tones that many are mesmerized by when first exposed to Andean music. The long reeds require good technique and can be quite challenging to the novice flautist.
The Siku is native to the Andes mountains. Also referred to as Zampoña in Spanish, it is a pre-colombian instrument that is prevalent in the indigenous communites of the Altiplano region between Bolivia and Peru. The Siku is now popular throughout much of Latin America, and tourists may be exposed to the instrument while traveling in Mexico or Central America. This is a recent phenomenon occurring in the last 30 years as Andean music has gained in popularity. The origins, however, are specific: the central Andean mountain chain running through present day Bolivia and Peru.