When my wife and I went on a vacation to Polynesia, we heard a local orchestra demonstrate their native instruments. One woodwind player held up a bamboo nose flute and some of us snickered. It sounded gross. He laughed and said it was usually played by the same musician for a lifetime.
He played some tribal melodies on the flute, which reminded me of the Native American flute music we hear in this country. It wasn't about playing a melody line for several bars, but more like a burst of notes that sounded like birds chirping or the wind whistling.