Page Title Role in Site Ranking

Title is most important part of the page so it plays major role in SEO. Title must contain the keywords you are optimizing page for.

For example keyword is Music Blog

Title 1: Example.com - Your own Music Blog
Title 2: Music Blog - Your own Music Blog by Example.com

Now from above 2 examples Title 2 is correct because it gives keywords as first preference than the site. It also includes one more keyword - Music Blog - so you can optimize for one more keyword on the same page.

Let me explain why Title 1 is not correct.

Title 1 started with the site name i.e. example.com which people are going to hardly search but the main keyword - Music Blog - which is searched by many people, is given last preference...