What can it mean this Fiddler on the Roof?

...The fiddler plays the main title while his sharp silhouette shares the screen with the film's production credits.
Quite often, people ask about the fiddler's meaning to the story. Although I am no scholar, I do have my own thoughts on the subject. The "Klezmer band" featured prominently in Russian/Jewish art which often highlighted either the fiddler or the clarinetist. So, the fiddler is already a cultural building block for the Eastern European Jew in the early 1900s.
A "Fiddler" on a pointed Roof would be in a precarious situation. While sliding his bow across the instrument, he'd have to be careful not to fall off of the roof to one side or the other. Only with great balance can he play the best music he can.
In "Fiddler on the Roof", Tevye lives life like he is also a fiddler on the roof. He is a good man who tries to live the best life he can for God. But is constantly pulled off to one side or the other. One one side of the roof is the traditions he and the village have grown with while the other side lies his three eldest daughters whose actions call for reform. When Tevye is faced with an issue he often states both sides of the story - or roof- to find the most balanced answer. When the Fiddler is featured in a scene, he is often representing what Tevye wants but is unwilling to say. These are just some of my thoughts. I would love to hear anyone else's opinion on the matter.

But in our little village of Anatevka, everyone of us is a fiddler on the roof, trying to scratch out a simple, pleasant tune without breaking his neck. It isn't easy. Why do we stay up there if it's so dangerous? I'll tell you, I don't know, but it's a tradition!

And because of our traditons, every one of us knows who he is and what God expects him to be.