We all know what's coming up in the first hour of tonight's two hour series finale of the greatest musical high school series to ever grace our televisions: A brand new flashback to 2009, when a bunch of misfit teenagers met up for the first time to make their dreams come true through song.

We could never have imagined the ride we would then be taken on, through and beyond the halls of McKinley High. There were twists, there were turns, there was love, there was confusion, there were eye rolls, there were tears, there were a few times we straight up stopped watching, and there was singing. A lot of singing.

We'd be impressed to find a soul who could truly recall all of the madness of the past six years, so we're here to help you. Let us take a journey all the way back to 2009, when a teenager named Rachel Berry was about to change her entire life, and also the face of television, forever…