Lusheng - H'mong Musical Instruments (Laos)
These instruments belong to the Hmong culture and are called "lusheng" or "qeej" (though this is pronounced "gaeng" or "qeng").
For more information, go to en.wikipedia.org/wiki/Lusheng.
The writing on the paper affixed to the wall is in the Hmong language (using Vietnamese script).
Photos taken in Laos