Accompaniment

[Sarah]

That which accompanies; something that attends as acircumstance, or which is added to give greater completeness to theprincipal thing, or by way of ornament, or for the sake of symmetry.Specifically: (Mus.)

[Hina Muqadas]

A [musical] part which supports or partners an [instrument], [voice] or group.

[Oralee]

music that is played with someone who is singing or playing the main tune: