Wind It Up

This song uses a sample of "The Lonely Goatherd" from the musical The Sound of Music. The legendary songwriting do Rogers and Hammerstein wrote "The Lonely Goatherd," and appear in the writing credits for this song.

Gwen Stefani says in the Daily Mail September 28, 2007: "You can only do a song like this if you don't care what people think. I grew up with that film and I cried when I heard the finished song."

The music video, from Stefani's longtime director Sophie Muller, follows The Sound of Music theme with Stefani as Maria von Trapp and her Harajuku Girls as the children.