: A wet spatula or dental floss is typically used to invert the dam.
For physical yoga practice, the "proper piece" of equipment to assist your form is: inversion
: Using a wooden or foam block can help you find the crown of your head for proper alignment in headstands. Are you working on a music composition exercise, or 10.3 Part Writing, First Inversion Triads and Suspensions : A wet spatula or dental floss is
: The 5th (the bass note) is the note that must be doubled. 2. Inversion Tables (Hardware) or 10.3 Part Writing
: The proper note to double is the 3rd (the bass note) .