This article was published on May 4, 2016, and it includes a video that shows the movements inside an opera singer’s mouth — the tongue, the throat, and the vocal cords that make up the entire vocal tract. The video was produced using magnetic resonance imaging (MRI). 

The number of small (and large) physical adjustments that a singer makes internally while performing is quite remarkable.

Enjoy!

-Dr. J.

http://www.telegraph.co.uk/science/2016/05/04/real-time-mri-captures-incredible-video-of-opera-singer-performi/