Has anyone here the special edition tracks?

Has the songs like The Sans Day Carol or An Angel ever been performed live?

Good question. I've only seen the Christmas (Symphony) tours from 2016, 2018, and 2019 and they weren't performed on any of the shows I went to on those tours. I checked on the old forum to see if either song was on a set list from a previous tour, but I didn't find any such references. My best guess is no, although I suppose it's possible they were performed at a small number of shows that didn't get reported on by the remaining fan forums.