Fans in Boston boo 'O Canada', then sing 'The Star Spangled Banner' in unison

Surprise, surprise... fans in Boston, MA this evening boo'ed the signing of 'O Canada' prior to puck drop at The 4 Nations Faceoff Final this evening.

While fans didn't exactly drown out the anthem... I kinda wish they had as Chantal Kreviazuk's version wasn't exactly my favourite.

Listen in:

Following chants of 'USA! USA! USA!' the crowd loudly sang along to 'The Star Spangled Banner'.

Check it out:

GAME ON!