Coldplay debuted their new single, "Every Teardrop Is a Waterfall," over the weekend, and the single has been posted on YouTube.  Listen to the track below.  The band has yet to say whether the song will appear on their upcoming fifth studio album, which is being helmed by Brian Eno.  Coldplay debuted the new song live at the Rock Im Park festival in Nuremberg, Germany Friday night.  There are currently no details available about the band's upcoming album.