The Guitar Circle Of Europe | http://www.guitarcircleofeurope.com

The Guitar Circle Of Latin America
| http://www.guitarcircleoflatinamerica.com

The Guitar Circle Of North America
| http://www.guitarcircleofnorthamerica.com

The League Of Crafty Guitarists
| http://www.thelcg.net

Berlin Guitar Ensemble | http://www.berlinguitarensemble.com

Los Gauchos Alemanes Music Shop | http://shop.losgauchos.de