A couple of days ago I watched this new musical comedy, Pitch Perfect. Here's one question that puzzles me: Why was Beca's riff-off considered invalid? What "it" did they need to match and how? I've watched this particular scene, like, 50 times and I still have no clue. Maybe there's something in the book that they forgot to include in the movie?
Jesse's song used the word "it" in its lyrics. Beca's rap riffed off this word. However, her song began with the word "it's" and was therefore deemed invalid on a technicality.
Beca sang "it's going down," and not it from "it feels like the first time," therefore causing them to lose the competition.
Jesse sang "it feels like the first time" and Beca's song started off with "it's going down...", deeming it invalid.