TIMBRES:
2.GOLDEN personal,composer.____________LIGHT Weight
3.PROFESSIONAL louder , flute like___________HEAVY Weight
4.OPEN breathy,physical,________LIGHT HEAVY Weight
5.SHAPE toric,lyre,overblowing,specialized complex chambers.
These doubles can be in accord, a fourth or fifth or an octave apart,each hand plays a full octave range using our developed four-hole tuning.
These too require an exact force of breath ,but it is the SAME for all the notes.