Dance and sing a happy song.

跳着舞，唱着一首快乐的歌。

youdao

Maybe he is about to sing a happy song?

或许它将要欢歌一曲？

youdao

Offer a bunch of fresh flowers bloom, to sing a song moving, holding a cup of sweet wine, may you have the beauty of the flower, the song of happy, the intoxicating wine, I wish a happy birthday!

献上一束绽放的鲜花，送上一曲动人的歌唱，捧上一杯香甜的美酒，愿你的日子有花的美丽，歌的快乐，酒的醉人，祝生日快乐！

youdao

He sure managed to sing a very happy song which turned out to be very off key for anyone who bought the mezzanine shares or the IPO.

FORBES: Don't Cry For Groupon's Andrew Mason

The start-and-stop process of rehearsal has led to plenty of inside jokes, a special handshake and even an appropriately off-kilter original song that they are happy to sing for a visitor in Broadway perfect tone, of course.

WSJ: The 4 girls who play 'Matilda' bond offstage