Talk Like You're Evolved From a Song.

Pick an existing song to start and evolve from. Write your beginning in a way that someone can find out what song it's from if they paste the beginning into a search. Then, you have to add something to it. That's all you need to know to get started. If you want specific rule details, or further description, see below.

To win you must have evolved from a song that wasn't posted yet, and be the last post. You can add whatever you want to it as you evolve, as if from the song. Take it too literally, or figuratively. Bring it to a logical, illogical, or other conclusion. You win if you're [evolved from] the last song that hasn't been posted yet, and no one evolves from a different song after you, because that would mean you're the most evolved.

You can do more than one for the same song if you want, but only the first evolution of a song in the thread will count; this is to avoid song incest obviously. It's all just for fun anyway, who cares about winning. Or maybe your fittest strategy is to post different evolutions of the same song to drive others away, before you evolve into a new song.