QUOTE (Christian Husmann @ Sep 2 2008, 08:32 AM)

Hello guys,
after I´ve read all these posts I am still not getting the point, apparently.
Where is the problem playing a wind based instrument softly?
Christian
Christian,
I think the basic problem is that the volume of sound from a wind instrument is related to the pressure of the "wind". Even with my much-maligned Stagi, I can vary the volume by varying the pressure on the bellows, and I'm sure this is possible on a quality instrument, too.
The problem is, it takes a certain threshold pressure to start the reeds, so there's a lower limit to the volume produced. This is the difference between reeds and strings - strings can produce a mere whisper that is still at the same pitch as at mezzo-forte or forte. (Whereby stringed instruments, especially plucked strings, have the disadvantage that they have a lower peak volume, and have to be amplified in noisy surroundings.)
The question of dynamics on the concertina is perhaps a mental one. It's all about pressure, so when you think "loud or soft" you should think "pressure".
Concertina playing is not about moving your hands in and out. It's about applying pressure.
Pressure is measured in "force per unit of area" (pounds per square inch or metric equivalent). The area (square inches) of your bellows cross-section is constant, so you vary the pressure by varying the force (pounds) that you apply to it.
So, basically, all you have to think about is the
force you're applying!
When you squeeze your box, the pressure inside rises above atmospheric pressure, and when you press a button, air escapes past the reed. This, of course, means that there is less air in the bellows, so to keep it at the same pressure, the bellows become shorter. So the hand applying the force has to move inwards.
I find it important NOT to think of moving my hand in, but to think of maintaining an even force. The hand will then automatically move inwards - slowly on a single note, faster on a full chord. I think of just "leaning" my hand against the end of the 'tina. When the end moves, my hand moves with it. It's a matter of feeling (as is often the case with mechanical contraptions). In this case, feel the force you're applying, don't feel the movement.
The above applies by analogy on the draw. Think of the force of your hand against the straps.
If you play "heavy-handedly", you will be louder; if you play "gently", you will be softer. The amount of bellows movement just happens. Don't think about it!
Cheers,
John