Because of the sparse matrix implementation of its fingering recognition algorithm, the Aerophone can do some strange things when you finger it wrong. (Just finger it right and you're OK.) So to illustrate this with an extreme example, finger a low 'Sax C' seven fingers down -- IMR IMRP. Blow a note. Then lift all your fingers except your right hand index finger, lifting your left hand first, and blow a note again. It plays the same note again with no change; not at all like a real sax. You can even run your thumb up and down the octave keys and still no change.
I love the Aerophone and it beats hell out of every other wind controller i've ever played, but this is goofy. This doesn't interfere with my playing 99.99% of the time, but it does on occasion. (In particular if my left hand ring finger loosens slightly when i am moving among low Bb, B, C, and Db with my left pinky. This can be changed by adding those particular wrong fingerings to FINGERIN, or better yet fingering it right.)
This is true in both SAX1 and SAX2 FINGMODE; i tested it only with V2.0.