So in my latest video I'm covering the topic of Superimposing Pentatonic scales, I have spoken about it, (kind of) earlier but this is far more detailed and covers all the pentatonic scales that can be played over a dominant chord, in this instance over the blues.
Check it out, see what you think, if its useful to you, or if you have anything to add
Here's the link: http://bit.ly/superpent
Thanks
Réa