The elusive chanteuse has mystified us again, serving up a brilliantly cringeworthy performance of ubiquitous festive banger ‘All I want for Christmas is you’ at the Rockafella Centre Tree Lighting Ceremony last Thursday. In what could only be described as a Christmas miracle, someone has isolated Mimi’s insane vocals from their backing track, the results being more:

than:

oops…

[Via.]