This mobile app takes real-time keyboard input and distributes it via a smart phone app to multiple screens so that soprano, alto, tenor and bass singers can read just their parts. So for instance the player might play middle c, e, g and high c and each of the groups of singers would receive only their part on their screen and then sing it right away. So the result would be a system for playing a choir with a keyboard.-- JesusHChrist, Sep 27 2015 Related People_20Organ [JesusHChrist, Sep 27 2015] Nice one JHC.-- blissmiss, Sep 28 2015 random, halfbakery