The next step is to play these short rhythm figures between different pitches to create riffs, and eventually to improvise with the rhythms. The idea is that you can play any pitches you like, but the rhythm remains the same every bar.
The following example uses the final rhythm from the previous page played on various pitches derived from the F Blues scale.
Here are some more set rhythm examples which use eighth note rhythms covering two bars. In these examples, the rhythm is shown first on one note and then as a riff using various pitches.
To finish this section, here is a solo which contains almost everything you have learnt so far. Practice it slowly to begin with and then try to play along with the recording. You should now make a habit of improvising on a melody once you have learnt it (but make sure you can play it correctly first). Try varying the notes and timing of some of the songs and examples in the book, and then make up some of your own phrases based on them.
The 12 bar Blues is an excellent progression for improvising, particularly with the Blues scale. As you progress through the rest of the book, you will learn more about scales, chords, rhythms and expressive techniques which will help you improve your improvising. As well as this, you should do as much playing by ear over chord progressions as possible. Make improvisation a part of your daily practice routine. It is also essential to play with other musicians regularly, experiment and have fun!