ac ‧ com ‧ pa ‧ ni ‧ ment AC /əˈkʌmp ə nimənt/ BrE AmE noun
1 . [uncountable and countable] music that is played in the background at the same time as another instrument or singer that plays or sings the main tune
piano/orchestral/organ/guitar etc accompaniment
He plays folk music with guitar accompaniment.
to the accompaniment of something
A group of children danced around to the accompaniment of drums and piano.
2 . [countable] something that is provided or used with something else:
White wine makes an excellent accompaniment to fish.
3 . to the accompaniment of something while something else is happening or while another sound can be heard:
They were exercising to the accompaniment of cheerful music.
4 . [countable] something that happens at the same time as another thing