Beatboxing, as musician Tom Thum was doing in that last example, uses the voice to (mimic) an incredible range of percussive instruments, from drums and cymbals to record scratches and didgeridoos.

But to make such, well, inhuman sounds, the (performer) contorts various parts of the vocal tract and pushes air at high velocity through the larynx, creating concerns that beatboxing might lead to long-term vocal damage.

So researchers took a close look at what happens inside the (throat) as the beat goes on. They snaked thin video cameras through the noses of four male beatboxers to watch their voice boxes during (performance).

The study found that beatboxing is actually probably safer than normal singing—or the screams of a rock star—because the glottis between the (vocal) cords stays open more and the force doesn’t get concentrated in any one spot. The work appears in the Journal of Voice. [Andrew Sapthavee, Paul Yi and H. Steven Sims, Functional Endoscopic Analysis of Beatbox Performers]

A little beatboxing might thus even help singers warm up before they expound on the history of physics [Galileo, Galileo clip].