This is a bass line from my new book RnB, Soul & Motown Style Bass Lines.
It's in the style of one of the most famous soul bass players of all time - Donald "Duck" Dunn. If you're a fan of his, make sure to watch this lesson:
If you want to buy the book, you can get it on Kindle, PDF, or paperback.
Scroll down for a free PDF of the TAB/notation and pentatonic scale shape for this soul bass tutorial.