Rondador
The rondador is a set of chorded cane panpipes that produces two tones simultaneously. It consists of pieces of cane, placed side by side in order by size and closed at one end, and is played by blowing across the top of the instrument. The rondador is considered the national instrument of Ecuador. Further knowledge on the instrument is required, as the musical scale of which note each tube played projects is unknown.

References

Bishop, Douglas. "A Worldwide History of the Panflute". Retrieved December 26, 2007. This family of pan flutes has many representatives: antara (Quechua) or siku (Aymara), chuli, sanka, malta (the most common variety of siku), toyo (bass siku), and rondador (Ecuador's national instrument, a chorded pan flute).
Sargeant, Winthrop (April 1934). "Types of Quechua Melody". The Musical Quarterly. 20 (2): 230–245. doi:10.1093/mq/XX.2.230. ISSN 0027-4631. JSTOR 738763.Also it is a woodwind instrument.

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