Does anyone know of an app for iOS where I can assign they notes to what keys I decide on the on screen QWERTY or bluetooth keyboard? On the PC I used a program from a Chinese Dev called 'HappyEO' and it let's you go into the settings and decide exacly which QWERTY key plays which note. Problem is now stupid windows 7 does so many checks on the input that the note sound is delayed which makes it unusable. I Use an IPad 2 and know there are loads of piano and other music apps but I need one where I can play the music with a QWERTY keyboard and I want to e able to assign the notes to my own key config. Hope someone can help.