How to explore jazz chords with Expresseur

You can use Expresseur to explore  "Jazz Chord Progression" as explained in this article

Entering the chords in the Expresseur, as described in this page, you can use any MIDI keyboard to drive the chord progression, and play through the scales attached to the current chord (chord scale, pentatonic scale).

Don't worry about which note (piano-key) to play (F, B, C# ...), just follow your feeling to "swing", creating you rithm, your melodic movements, within the chord scale with "white keys", and adding appogiatures with black keys.