I'm not someone who goes round the house singing all day- I'd be shouted at if I did- but the act of putting up the Christmas tree demands a vocal accompaniment- something sugary and Germanic. I only know the first line of the most obvious song- which goes "O tanennbaum, o tannenbaum" and the last line which goes "We'll keep the red flag flying here" so I opt for this instead:
Falling in love again, What's a girl to do? Never wanted to. I can't help it.