I just saw this and it's seems like a great lesson(it probably is because it's Robin Nolan doing it
).
It's a lesson on soloing without a backingtrack or anything. His lesson is specifically for gypsy jazz but you can apply the method to any style you want (Change scales/chords/harmony etc.)

It's a lesson on soloing without a backingtrack or anything. His lesson is specifically for gypsy jazz but you can apply the method to any style you want (Change scales/chords/harmony etc.)