Watch the This Two: Overview online guitar lesson by Jon Finn from Improv Target Practice
Here, the chords, scales and Target Notes are shown, described and demonstrated for "This Two Solo Section". Pentatonic versions of the scales were included to highlight the fact that very few notes change when moving from one chord to the next. When practicing the pentatonics, notice how similar they are, but note what changes. These notes are featured in the Target note choices as well. D minor pentatonic with b5 (played over the Bb7 chord) is a sort of an outline of a Bb lydian b7 scale. This is hard to see because the pentatonic doesn't include Bb at all. But when you play it, it sounds really cool. Try it!