I desagree with the first statement because all children like the music, different kind of it, but we, as a teachers can find songs according thier age.
For the second statement, I think that each teacher has different class routines, for example I begin my class with a song or a game and then continue with the other activities.
I agree with the third statement because some chidren need to practice the language while the other get finished, because if they don´t have to do, they can out of control the group.