In the last section, we played solos with very few rules. It's a perfectly valid approach. But to increase the number of notes that fit better in your solo to the 12 bar blues is more common to bass or solo on a scale. What is the scale you ask? Well, you can view a scale as a sequence of appropriate notes to play for a given key. It's basically the collection of notes you choose from first when you play.

There are many scales to choose from, but the one we're going to use is known as the blue scale, and I will show it to you in the next video.