A medium tempo C Minor Swing Theme. It is called C Minor, because that is the central key, but actually it has some interesting changes.
This is an intermediate/advanced level, the changes are not simple, but also not extremely hard in a jazz context. You will learn which scales to use, and how the use- and transition between different scales in a tune with some modulations. So, it is not that easy, but transitioning between keys is a basic and essential skill that you will need for a lot of jazz tunes. So, you need to learn this!
This tune was also posted twice on Youtube, check out the TJG playlist in this course.