accompaniments

noun

1. something incidental or added for ornament, symmetry, etc.
2. Music. a part in a composition designed to serve as background and support for more important parts.

noun

1. something that accompanies or is served or used with something else
2. something inessential or subsidiary that is added, as for ornament or symmetry
3. music a subordinate part for an instrument, voices, or an orchestra

n.

1744, from French accompagnement (13c.), from accompagner (see accompany). Musical sense is earliest.