这次音乐会上刘欢所唱的歌被许多人模仿歌唱

The song which was sung in the concert by Liuhua was copied by a lot of people.

您好！
The song which was sung in the concert by Liuhua was copied by a lot of people.
希望以上信息可以帮到您：－D

the songs of Liuhuan were copied by many people in this concert

The songs of Liu Huan in this concert are copied by many people.