笙歌的英文：
[Formal] playing and singing

参考例句：

Play of music and singing until daylight
笙歌达旦

formal是什么意思：
adj. 正式的；礼仪上的；有条理的；正规的；公开的 ；拘谨的

You should recast the report in formal wording as it is a formal occasion.
这是一个很郑重的场合，所以你的报告应改的正式一点。

A formal note is essentially a formal personal letter.
正式照会实质上是正式的个人函件。

They are very formal in their business transactions.
他们的商务议事很有条理。

playing是什么意思：
n. 比赛；演奏
v. play的现在分词形式

represent a play
再上演某剧

play around with
在一起厮混|玩弄|戏弄

Play havoc with
搅乱,破坏

singing是什么意思：
n. 歌唱，歌声；耳鸣；振鸣
adj. 唱歌的；音乐般的
v. sing的现在分词

This is a singing machine. Look, you sing the lead and this has the backup.
这是个伴唱机。看啊，你开始唱它就给你伴奏。

She's singing a pop.
她在唱一首流行歌曲。

Did you join in the community sing ?
你们有没有参加社区的合唱会？