To submit requests for assistance, or provide feedback regarding accessibility, please contact support@masterclass.com.

Have you ever watched the blooper reel of a film and seen a little microphone dipping in from above the frame? That microphone—called a boom microphone—is held up by a member of the sound crew called the boom operator. If they do their job well, you won’t ever see the mic—and instead you’ll just hear crisp, clear audio when actors say their lines.