Groove with Scardi B as she takes you through Fall Out Boy's jam "w.a.m.s." and the magic Pharrell Williams brought to the track as its producer.

Scardi breaks down the Neptunes' famous 4 count and how it gives "w.a.m.s." its infectious rhythm. Explore Pharrell's background in production, from his early days with The Neptunes to his collaborations with artists from all corners of the music world.

• Playlist: Pharrell's Four-Count Start
• Youtube: Four-Count compilation