I'd suggest giving it a bit more time as quite a few people haven't voted and stuff. Maybe this should last a couple of days rather than just one?
If not then my choice of song is 3rd at the moment so I guess I'd be choosing the theme?
So if you want the choice to be made now then I suggest songs over 10 minutes as the theme. None of the songs in this round were that long so this should bring in a bit of change I think.