"The Pen” is one of the most prolific R&B songwriters of the 2000s. He's worked extensively with Destiny's Child and Beyoncé—having written the bulk of her sophomore album, B'Day—and has also lent his words to Usher, Chris Brown, Ciara, Fergie, Pussycat Dolls, Gwen Stefani, Britney Spears, and Miley Cyrus, to name a few.