Conversation so far:
What happened in 2013?
On 9 August 2013, Coldplay announced the release of their song, "Atlas", which featured on.
What did it feature on?
the soundtrack for the film The Hunger Games: Catching Fire.
Was Atlas otherwise popular aside from being in the movie?
CANNOTANSWER.

Question: What was Ghost Stories?
Self-contained rewrite: What was Ghost Stories?