NYTimes: Watch Beatboxers Break It Down Inside an M.R.I. Scanner

Under magnetic resonance imaging, they observed the mechanics of how the artists make the distinctive beats that sound like percussion instruments using only their mouths. In gritty black and white, their tongues leap and flip; a sound like a snare drum snaps out.

The research, based on scans of five different beatboxers, was presented Wednesday at the Acoustical Society of America.