Song loan
From Wikipedia, the free encyclopedia

A song loan, (Vietnamese pronunciation: [sawŋm˧ lwaːŋ˧]) or song lang or song lan) is a percussion instrument (idiophone) used in Vietnamese traditional music.[1][2]
The song loan consists of a hollow wooden body about 7 cm in diameter attached to a flexible curved metal piece ended with a wooden ball.
Playing
It is put on the ground and can be played by using the foot to force the ball to beat the body of the instrument.