Read this: The story of emo in 14 songs
"Did Hayley Williams drive to your house and drop off a candle and a CD with her new song on it or are you having a normal night," said Carly on Twitter.
My Limb has since hit YouTube, with Paramore Video Dump uploading the track and writing: "Hayley Williams asked fans to leak her song because she doesn't care about sales or promo. This song is called My Limb and it will probably be available on Spotify soon. This may be the lead single for an upcoming album."
So awesome.