Four pages (2 double sides) of a Tibetan/Mongolian music manuscript with YANG-YIG GRAPHIC MUSIC NOTATION. Inks on paper. Good condition, finger marks to corners, stain across centre fold, 18 x 15 cm as image. Undated estimated to be late 19th century or earlier. In thick double fronted mount. Such texts would have been used as a mnemonic device by the master of chant. The type of graphic notation of the melody line goes back to the 6th century. It does not record the rhythmic pattern or duration of the notes.