I went on iTunes and looked at versions of Christmas songs. Everyone has done them!

With a track like 'White Christmas,' everybody has done that song in every format you can imagine, so I just looked at the chords at that particular song and what chords would make it work. That's kind of quite a sad song, and I had this idea of someone singing it in the subway, someone who is homeless, old and sad.

With a track like 'White Christmas,' everybody has done that song in every format you can imagine, so I just looked at the chords at that particular song and what chords would make it work. That's kind of quite a sad song, and I had this idea of someone singing it in the subway, someone who is homeless, old and sad.