草笛 樹葉笛
A [[leaf]] used as an [[instrument]] when the player places it in direct contact with both their lower and upper lips and blows air across it. Not all leaves can produce a sound as it requires the correct rigidity, flexibility and thickness, as well as being shaped and placed accurately.

A leaf flute can be recognized when a character holds a leaf horizontally near their mouth. 

h5. External link
* "Wikipedia":[https://en.wikipedia.org/wiki/Musical_leaf]
leaf flute