Pharrell is always busy juggling multiple projects, but he's especially excited about the music he's been creating with Gwen Stefani. And this weekend, during his set at the Odd Future Carnival in Los Angeles, he debuted one of her new songs called "Spark the Fire."

Gweni previously shared a snippet of the song, but P was so excited to debut it in full, that he actually played the track from his cell phone. And, right off the bat, he told the crowd that it was about feminism.

“I just wanna see ya'll faces when it come on,” he said. "It’s called 'Spark the Fire' — it’s about feminism." The upbeat track was heavy on the bass, and it sounds like Gwen could have another banger on her hands.

In addition to previewing that song, Pharell also performed some classics from N.E.R.D., and pretty much brought Tyler, the Creator -- the ultimate N.E.R.D. stan -- to tears, when Chad joined him on stage to perform. Watch Tyler get all teary eyed in the video below.

Other performers at the show included Rick Ross, Mac Miller and Schoolboy Q.