Okay... so it hit me...
Why would playing musical instruments help with airway? Well... sure ther is pressure... BUT! Think about this... the pressure is primarily activating change in the softer tissues... but! It would also apply pressure against the palate, right??? And the way the pressure is... for example... if you think of a balloon as that a balloon has pressure out! So... It would seem logical that if done on someone with more maliable bones that they could reshape their palate to a more circular shape. If you have a kid with a high palate and no break inbetween the maxillary sides (ex. NO palatal expansion)... could buying a few of those racing balloons in reason be a bad thing??