Seventh Class: Prevention  Overuse  Diseases of Guitarists by Carlos R Gomez)
Channel: Carlos Rubén Gómez
Date: 2009-01-21

It´s the same spanish(seventh class) video, but subtitled, in English.
Carlos Ruben Gomez explains the Prevention of overuse diseases of the guitarists. Translate to English by Andrés P. from Colombia
(Nickname: Andrexthor)