Some pics and one video:
http://www.dervishi.com/public/wiki/pmwiki.php?n=Dervishi.E-Shell
Very atmospheric. I suppose you could use the MIDI to generate trumpets and other samples? Do you incorporate an accelerometer as well as the wind pressure itself?
Thank you 
Yes, sounds are generated by an external midi-expander (hw or sw), connected to the "shell". I didn't incorporate any accelerometer in this project. But I love MEMS accelerators/inclinometers/gyros, by the way...
Great, this is my kind of project.
Fantastic idea to use a shell. On the video your fingers seem to be doing something. Is it just pressure -> note or pressure -> volume and the note comes from somewhere else?
Hi Mike, thank you 4 your appreciation
Sensors work in this way:
pressure sensor --> controls volume
slider (inside the shell) --> controls pitch
button (inside the shell) --> controls note-on command
Next step will be sostituting the slider with an "empty volume mesurement/evaluating device" that i'm trying to make.