CHELSEA. DAGGER.
The problem with Hands Up in the Air is that it's forced - not a natural tune that you wanna move your whole body to (like Wisconsin's Jump Around)...had not connection to NU before they tried to impose it as the Q4 song...in fact, I don't think I had ever heard it in my life before they manufactured it into NU gameday lore.
Chelsea Dagger ("the Blackhawks song," for those who may not know it by name) on the other hand, has Chicago heritage...yes, of course it's connected to hockey and the Hawks...god forbid we hitch our wagon to that franchise. Anytime it plays at Ryan Field you always see people moving around to it, because it's familiar to Chicagoans...and it had its defining moment at Ryan Field when we played Wisconsin in 2009 - as I often mention when this topic comes up, the game was tight, bowl positioning was at stake...with a few minutes left and the game on the line, this song started playing and all our players started dancing around to it, as did our fans. Meanwhile, as we were celebrating like we had already won the game (which we certainly had not...yet), the Badgers sideline was stone cold silent, like someone had died. I remember watching the broadcast afterward and the sideline reporter made a big deal about how different the two sides were. And then we won - still one of my all-time favorite NU football memories.
EDIT: AAAnnd according to our own Nate Williams, this was one of the songs recommended by the Leadership Council at the time. Come on. This is a no-brainer.