conservative way and right brain

The topic that what Katie brought up got me attention. If teacher teaches well on Western /folk ways in her methods and the students take to it well and enjoys it and eager to learn, I believe there wouldn’t be a problem.It is nothing wrong with a conservative teaching because, the student may learn from conservative way. However, if the teacher teaches too conservative way in Western music and the students get bored and not appreciate, that is a problem. Western music is appropriate for the music classroom. However, I think the reason why we try to incorporated “popular music” is that we can use it as a tool so that the students feel more open about Western music and make us easier to introduce Western music in more effective way. As we know, unlike any other classes like math or science, Music is more right brain process. It is very true that we need balance between right and left brain. However, if we even teach music in too much left brain ways like other classes, when and where in school can they develop their right brain?