Jing Nong (Bamboo Mouth Harp) — Fully Mature Bamboo 1-2 Internodes Long, Shaved Flat and Thin, One Half Thinner, with a Long Oval Slot; Blow at the Slot and Flick the Thin End for a Rhythmic Twang

"A tobacco smoker must find banana leaf; a jing nong player must find old bamboo" (a folk song an elder remembered) (Sirindhorn Anthropology Centre, author not named, CC BY 4.0)

Choose fully mature bamboo and cut it into internodes, about 1-2 internodes long.

Shave the bamboo flat and thin with a knife, one half thinner than the other. In the thin half, cut a long oval slot running almost its whole length. Blow at the slot and flick the soft, thin end.

Shave the bamboo into a long switch-like shape; make the part that is blown to sound the same as the flat form.

Drawings of the jing nong (Sirindhorn Anthropology Centre, author not named, CC BY 4.0)

Blow at the slot and flick the soft, thin bamboo with a finger while blowing into the slot; it sounds in rhythm with the flicking finger. Players were usually boys from 10 years old up to young men, and youths also played it to court girls.

Playing the jing nong vanished from the countryside long ago; an elder, Mr Run Mophuang, still remembered a short verse about it. Take care with the knife when shaving. Source: Sirindhorn Anthropology Centre, Traditional Objects of Everyday Use database, "จิ้งหน่อง", author not named (CC BY 4.0 licence). **Limits** The source gives no slot size or bamboo thickness. The illustrations are drawings.