Mastering Django Web Development (Video 21)

The video tutorial explains how to use a new model manager called New Song Manager to add songs, artists, and albums efficiently. It introduces a method to create and save new songs without repeating code, emphasizing the DRY principle. The tutorial also highlights the benefits of code reusability and provides a simple example of using the new song method.

What is the significance of the principle 'never repeat yourself' in the context of this code?

How can you use the new song method in practice?