Famous classics hidden in this Christmas performance
 

There are hints to some very well known melody lines throughout the whole arrangement.

Days 3, 6, 7, 10 are quite clear. Additionally (although not exact matches), I've got a pretty good idea about day 8 (Ländler from SoM) and day 9 (Estudiantina).

But the rest remains mostly a mystery for me so far. Please share your ideas about days 1 (if applicable), 2, 4, 11 and 12.

Could you post exact timestamps on the parts you would like us to listen into?