Stretch Tutu Classical Course Level 3: Keyhole Back StylePrerequisites: Students MUST have experience sewing stretch fabrics, as the techniques used in stretch sewing do have a bit of a learning curve. The prerequisite for this class is that you have taken the following Level One classes: Basic Leotards and the Classical Performance Tutu Level One. It is preferable that you have done one of the Level 2 stretch tutu classes, as well, but not a necessary prerequisite if you have worked a lot with stretch