Music content production, published by RGB in Spain in 2009

Series of musical instruments training content produced and idea to get the best way to do this amazing visual and standard notation of guitar specially flamenco genre were passed on 2009 by RGB and held the second place of the best sales on 2010 of the TopTen, featuring some flamenco forms (Palos) The Solea, Buleeia, Alegria,Solea por Buleeia , Tangos flamenco and so on under  the name of "Progressive Studies" by Mehdi Mohagheghi which are being sold concerning several certified company and sites like www.flamenco.exports.com, flamenco live, deflamenco and ....