This is a solo from "Rock Performance" written by Danny Gill and Nick Nolan. The first part is the same as the book and I have improvised the second part.
It's a G7 chord backing track, I used G Mixolydain, G Dorian and G Blues mixed with it. You can use either Bb or B. Bb is from the minor scale and B gives the scale more of an impressive sound. Pay attention on the RYHTHM when you play Funk and Enjoy!