Closed mode matches the real Uilleann chanter. For Uilleann fingerings, you can choose whether the back-D note plays when the Back-D switch is touched (Open mode) or released (Closed mode). Touch the '?' on the upper left corner for the Choose between Uilleann and Highland chanter fingerings using the selector below the drone puck. IMPORTANT: Since this app requires as many as 9 fingers on the screen at the same time, before playing, disable 'Multitasking Gestures' on your iPad (in the iPad Settings app, under the General section, turn the Multitasking Gestures switch to the off position). MIDIPipes supports two independent MIDI channels, one for the chanter and the other for the drones. MIDIPipes doesn't produce any sound on its own, it is designed for playing hardware and software VST-style MIDI synthesizers via a CoreMIDI compatible interface connected to the dock connector or virtual MIDI instruments like Roland Sound Canvas for iOS, Universal Piper, or Sonosaurus ThumbJam running on your iPad.
The chanter fingerings are based on those used for the Irish Uilleann or Scottish Highland bagpipes. MIDIPipes is a Irish/Scottish Bagpipes MIDI practice chanter for the iPad.