片尾曲英語是ending song。
詳細解釋：
opening theme
片頭曲
[例句]Like the composer of a symphony, he ended by returning to his opening theme.
他像壹位交響樂的作曲家壹樣，最後又回到他開始的主題。
Ending Song
終曲; 片尾曲
[例句]The music video of A New Day was released in Mipcom; the ending song will be released a little later.
《新的壹天》的音樂錄影帶已在電視節公布。而片尾曲則隨後公布。