Classical music is serious music．People usually enjoy it at a c____or in a theatre．Beethoven and Mozart are great c____musicians．

    Pop music often comes and goes quickly．It is usually about love and everyday life．Country music，____(摇滚)music and jazz are all pop music．They are very popular with young people．

    Folk music is ____(简单的)but special．Guo Lanying，Song Zuying and Tengger

 are____(著名的)for their folk songs．