This is a fun, simple game. All you have to do is post a comment asking "What song describes your...?" and then choose what you wanna ask. Like "What song describes your personality?" or "What song describes your social life?" and stuff like that. Then, people will reply by posting links to whatever song they feel describes whatever was asked.
here's an example:
Person 1: What song describes your social life?
Person 2 (in a reply): I've got lots of friends! it's totally this song. http://youtu.be/1oyhjyI9lF0
Person 3 (in another reply): My life kinda stinks right now. Probaly this song. :/ http://youtu.be/mdFX7fgKG4M
Hope that helps you understand! Have fun!