After the release of the 2012 movie Pitch Perfect, you'd be hard-pressed to be in the same room as an adolescent and a cup without hearing some version of the Cup 'Song. You know the one. But just in case you've been under a rock since then, here it is: It's actually a brilliant ostinato and offers a wealth of teaching opportunities (it's become a staple of my tika-ti strategy since then, for instance). It has also taken off across pop culture, inspiring other renditions of t