The cup song was all the rage when Anna Kendrick made it famous as part of an audition in the original Pitch Perfect. Princess actually won a talent show with a similar performance. There are three things that are crucial in performing this song:
- Learn the words.
- Learn the routine.
- Use a cup.
And never a glass as shown in this very short, very realistic safety demonstration. Glass may break when smashed against a hard object (like your skull) which will result in torn tissue and immediate bleeding. (The red stuff oozing through his fingers)