Panpipes have been found in North America only on Hopewell sites. A particularly well preserved specimen from the Helena Crossing Site was described by James A. Ford. From this description a reconstruction which produced a true octave was made from native cane. Since the panpipe is a more primitive instrument than the flutes in use during Hopewell florescence, it is postulated that this instrument was used by shamans in the cult of ancestor worship.
Young, Gloria A.
"Reconstruction of an Arkansas Hopewellian Panpipe,"
Journal of the Arkansas Academy of Science: Vol. 24
, Article 12.
Available at: http://scholarworks.uark.edu/jaas/vol24/iss1/12