Here's an excerpt from an interview with Madonna from Daily Record:

For the latest batch of songs, she has teamed up with Justin Timberlake, Timbaland and Pharrell Williams, who was the most impressed with Madonna's incredible work-rate.

"That work ethic still exists," she said. "I don't think it was a surprise to Justin and Timbaland but Pharrell just kept referring to me as a work horse. He complained a little bit about my relentless inability to sit still for very long, but he got over it eventually."

Among the tracks fans will hear on this next outing is She's Not Me, which Madonna describes as "the ultimate jilted lover song" and Spanish Lessons, which was inspired by the Latino dance craze, The Percolator.

Of the song Incredible, she said: "That's not about my career, that's about a relationship. It's not even necessarily about me, but it's the idea that often at times we take people for granted and we lose our sense of appreciation for them.

"Then something goes wrong and all you can think about it is how you want to get it back to the way it was, because it was incredible.

Source: Daily Record