accompaniment
nounUK /əˈkʌm.pə.ni.mənt/
US /əˈkʌm.pə.ni.mənt/
Something that goes along with something else, like music that plays with a song.
The piano played a soft accompaniment while she sang.
OTHER MEANINGS
2. Music played to support a singer or main instrument.
He wrote a gentle accompaniment for the violin.
3. A food or drink served with a main dish.
A fresh salad is a nice accompaniment to the meal.
4. A person who goes somewhere with someone else.
Her brother was her accompaniment to the party.