From songfight’s website:
Songfight.org posts a title, people make songs for that title, the songs are posted on this page, people decide which they like best, and vote for their favorite.
Basically, once a week, three song titles are posted from which people create songs. Then, the songs are posted and people vote on their favorite. I decided to jump in on the action with my own entry for this week’s red title: Spirit World. I posted it under the name ‘Pathogenic’, so head over to Song Fight and vote for your favorite entry.