This Beat boxer Gaucho (Timo Schnepf) shows how the tongue moves while freestyle while using the same effective technique. In the beatbox mode, tongue Gaucho 'Timo Schnepf’ has freestyle inside the real-time MRI scanner '50 images per second '.

Beatboxing in Real Time 'long Version'

These researchers at Max Planck's Dr. Jens Frahm have a Biophysical Chemistry Institute in Gottigen, Germany. It shows how the tongue operates during speaking and singing through the real time of MRI.

Source video & images - https://laughingsquid.com/real-time-mri-of-beatboxing/