Watch the Applying The Shapes to Scales online guitar lesson by Tim Miller from Creative Arpeggio Design
Let's look at how to apply the 212121 shapes to any scale. When you apply a 212121 shape to a scale using a creative approach, you can design your own unique arpeggio shapes:
1. Choose a scale.
2. Apply any of the three fingerings to the scale.
3. change the notes to fit the 212121 shape.
In this section, I'm using an A Lydian scale to design 3 new arpeggios.