Panpipes
The siku (Quechua: antara, Aymara: siku, also "sicu," "sicus," "zampolla" or Spanish zampoña) is a traditional Andean panpipe. This instrument is the main instrument used in a musical genre known as sikuri.
See http://www.philtulga.com/Panpipes.html
See http://www.philtulga.com/Panpipes.html