I have a Roland Prelude. I am very happy with this keyboard however there is no options to show the key currently played (for instance chord C or Dm...). I had a Yamaha in the past which allowed this useful option.
Do you know any app which can run on Prelude via USB connector to smartphone/tablet with this key reader?
I am unsure if the Prelude USB is enough updated but maybe there is a way to connect an app through MIDI outlines of my Prelude keyboard.