Once you have a topic you need to define it a question that will help you with the researching and writing of your paper. A research question looks at the connection between two issues or the influence of one on another or the difference between two things.
So, if your chosen topic is the “Pop music and social change” You need to change it to something along the lines of: “How has pop music contributed to social change?”
Let your teacher know you have chosen a research question and get her approval before continuing.