Permission for the Song

So it's quite late on to be doing this, but I logged into my Mumford and Sons account on their website (of which theyve made radical changes to the look of) to ask for their permission to use the song, 'White Blank Page.'
It's doubtful that they'll actually get back to me, however Marcus has replied to people on the website before, so there is a slight chance. Watch this space. :)