LEFT: A nyckelharpa from Europe. Sounds like a viola, except that, well, it's too much in tune. Seriously enough - in the sense that there are no tempered or leaning notes, as the pegs on the side of the neck act as frets. Like a guitar, broken chords are common in use.
RIGHT: A marovany from Madagascar - it's a box with strings on the side, plucked, and sounds much like a harp. More of a melodic than a harmonic instrument.
LEFT: A traditional Chinese percussion ensemble from Sarawak. Two tall trees, seen illuminated by green light, hold up the stage structure.