This video pretty much says it all. Once again, my face is a pile of goo, melted by these Latino classical guitaristas, Rodrigo y Gabriela. The last time I did this to a guitar, I broke 18 knuckles, ripped of 33 fingernails, and tore the strings straight in half.
Thanks to Steph for this suggestion.
Hailing from Mexico, here they are playing “Diablo Rojo” (Red Devil).