ser·e·nade
noun/ˌserəˈneɪd/
/ˌserəˈneɪd/
- (in the past) a song or tune played or sung at night by a man outside the window of the woman he loves
（男子在所爱慕的女子窗下演奏或歌唱的）小夜曲 - a gentle piece of music in several parts, usually for a small group of instruments
（尤指供小型乐队演奏的）小夜曲
Word Originmid 17th cent.: from French sérénade, from Italian serenata, from sereno ‘serene’.