This month, instead of watching one video, you really should watch five. These five videos tell a pretty funny story of how Hallie finally came to perform "It's December".
At first, the pressure of performing - and her fear of not knowing the words - sent Hallie into a downward spiral.
Eventually she pulled herself together, but she still couldn't muster the strength to make it through the song.
Will stepped in to save the day - as they say, the show must go on - but when Hallie saw her brother stealing her spotlight she started to come alive.
With Will out of the picture, Hallie stepped tentatively back onto her stage.
And finally, she hit her mark.