Solo thumb piano clip with an artifact of flutelike harmonics. UFO is the resonator shape, *back* is reversed, *down* is pitch shift.
The instrument used can be viewed at
This is the full track of a clip that is up at Oddmusic.com. The kalimba used here is made from a tiny flat Excedrin tin and bobby pins. The width is about an inch and a half. Photo here: http://www.oddmusic.com/gallery/om13500.html