CT-Gui, CT-Synth, CT-Farfisa

GUI toolkit for the Linux desktop and for Android tablets, running Android 4.2 or higher.
Included are 2 demo projects: a synthesizer and an organ.
Attached to MIDI keyboard

Info about building and installing: README

New! More robust connection to USB keyboard. It should work now always 'as expected'.

Source code:
CT-gui.tar.gz (date: aug 8, 2014)

Apk files (to download directly to your device).
NB! You will need at least Android version 4.3, aka Kitkat, as this is the first version that enables low audio- and MIDI latency. Don't forget to enable, in the Security settings of your tablet, the item Unknown Sources

In order to connect a MIDI keyboard (via an OTG cable), the tablet must have USB-host capability.