Gemscorno, blown on the wider bore:
http://www.youtube.com/v/RENsuG4yA1k
Sounds lovely, I had to look it up... looks like the gemshorn is an ocarina made from the horn of a goat. :)
Welcome to the forum btw.
Gemshorn. Used by Karl Jenkins on his Adiemus CDs.
http://www.music.iastate.edu/antiqua/gemshorn.htm
Other similar instruments:
http://www.music.iastate.edu/antiqua/instrumt.html
Take your pick.. (http://musicmavericks.publicradio.org/features/feature_partch.html)