/ə'kʌmpənɪmənt; ə`kʌmpənɪmənt/
n
1 thing that naturally or often goes with another thing 伴随物; 与之俱来的事物
*White wine provided the perfect accompaniment to the meal. 白葡萄酒是这顿饭的最佳佐餐酒.
2 (music 音) part played by an instrument or orchestra to support a solo instrument or voice or a choir 伴奏
*singing with
(a) piano accompaniment 由钢琴伴奏的演唱.

n
[U and C]
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 sth
　An elderly man puffed on a trumpet to the accompaniment of drums and piano.
[C]
something that is provided or used with something else
　White wine makes an excellent accompaniment to fish.
to the accompaniment of sth
while something else is happening or while another sound can be heard
　They were exercising to the accompaniment of cheerful music.
[C]
something that happens at the same time as another thing