It's supposedly diatonic but is very basic. You have to hold on to a button to switch it to draw notes and another diffeernt button if you want to play 3 hole chords.
Other than that you can't really do much like bending or even any kind of volume/pitch control. The tone is very irritating and inferior as well.
It would be interesting to see if someone could develop a harp from the ground up just using sensors. A programmable harp could be adjusted to be low or high tuned or any other special tuning on the fly. It would probably cost a lot to develop one that was anywhere close in quality to a real harp and I'm not sure about a phone/harp. A sudden incoming call in the middle of a solo and it seems like a plan for giving yourself a wet-willy.
nacoran: such a harmonica exists - click here. It measures the vibration of the reed. Not ideal to play on, but you could probably easily vary pitch of the notes... ---------- germanharpist, harpfriends on Youtube
Pretty cool, although it still uses reeds. There is the ChengGong harmonica with a sliding mouthpiece which might be quickly adaptable to electronics and I saw a video somewhere of an experimental harmonica/synthesizer from back in the 70's though I don't remember what it's called. It was the size of a football.
