grace notes

Yancey says: "A composer of music may add grace notes to the score. Though not essential to the melody–they are gratuitous–these notes add a flourish whose presence would be missed. When I first attempt a piano sonata by Beethoven or Schubert, I play it through a few times without the grace notes. The sonata carries along, but oh what a difference it makes when I am able to add in the grace notes, which season the piece like savory spices."

~ from "What's So Amazing About Grace"