The hidden track of X&Y, “‘Til Kingdom Come” was originally intended to be a collaboration with Johnny Cash, but he died before his part could be recorded – this explains why the song has a very country vibe to it (Rihanna would later have the “honor” of being Coldplay’s first collaboration on an LP).

At its core, “‘Til Kingdom Come” is a ballad about Death coming to claim a man at the end of his life (a fitting theme given that Cash was close to death himself). When played at live performances, the band usually combine the song with Cash’s “Ring of Fire.”