9th World Symposium on Choral Music 2011, Puerto Madryn, Chubut, Patagonia, Argentina; International Federation for Choral Music - IFCM; www.wsc9.com; This Video is a service of Choral Festival Network - www.choralfestivalnetwork.org; Concert August 6, 20.00, at Gimnasio Municipal Puerto Madryn