I am happy to present a MIDI controller I have designed to play chords progressions. It's fun to play and very inspirational.
You can play chords and bass lines together. The chords choice is big. There are 20 different chords per note. Chord structures are stored in a user bank so you can create and save your own very special sophisticated chords if needed.
Here is a brief presentation of the main features :

And a small demo when hooked with ableton Live :

Feedback welcome !