The Sims 2 UK published a short Christmas Carol for the 2008 holiday season based on “Oh Christmas Tree”.

Ooh kukla troob, ooh kukla troob
Vo bronky gwib des norbles
Ooh kukla troob, ooh kukla troob
Vo bronky gwib des norbles

Zee bowda hoo da steeny libe
Timoxa wib no sparka bwy

Ooh kukla troob, ooh kukla troob
Vo bronky gwib, Vo bronky gwib
Vo bronky gwib des norbles

Listen here – MP3

Thanks for the find, InfiniteSims!