Reconstructing the "fifres" of the Grande Écurie / Boaz Berney — RIMAB
Amazon.com: Interact China Hulusi Flute made from Bamboo with 3 Octaves, 9 Holes, and 13 Notes Pro Level Woodwind with Case and How to Play Guide 113 : Musical Instruments
How to produce 'kan' (upper octave)
Flute: Multiple Octave Major Scales with Metronome - YouTube