Lebanese Mismar

A couple of weeks ago my language partner and friend from Lebanon sent me an early birthday present which was a Lebanese Mismar! My partner wasn't able to give me too many tips on how to play this as it seems it's simply mastered by experimenting.

So far all I've learnt is
  1. Both of the two mouth pieces including the vibrating reed parts must be put entirely in the mouth and then blown in order to make a sound. I've placed the reed under my top lip but this may be wrong
  2. Each one the fingers should can be used to cover up to 2 holes at once
  3. the sound is none too sweet when played by me
No idea if the notes match the 8 notes in the regular Western Octave. I'll write more if I manage to get any better at this or find more information. So far none of my ability with playing the saxophone seems readily useful.