Holding

Hold·ing

Holding

n.
  1. The act or state of sustaining, grasping, or retaining.
  2. A tenure; a farm or other estate held of another.
  3. That which holds, binds, or influences.
  4. The burden or chorus of a song. [Obs.]

Phrases & Compounds
Holding note
a note sustained in one part, while the other parts move.