Here was an improvisation based solely on picking a key and a scale. Then applying the Kenny Werner idea of just letting go and see what happens. I found myself running chords in the key somewhat random, then pulling myself into some familiar progression occasionally. My take is from a key signature and a scale, with an expansion into the extended jazz chords, although not so much in this sitting.

Be sure to check out Improvisation for Real, I'll be using this new course to expand my horizons.