To strengthen your ability to consciously shift between sound registers as desired, sing these notes and melodies in the predefined registers. Apply this technique to further practice with any melodies—preferably on pitches you can sing in your mids or highs.
Note: For any difficulties, see Problem Catalogue and Suggested Solutions (Module 2, pages 89–113)
This overview provides valuable input and inspiration on the most common problems and challenges, how to recognize them, and which solutions you might consider.