Wagner Barbosa is a brazilian voice trainer, singer, guitarist, songwriter and producer. He is a mentor teacher of IVA method, was a SLS Teacher. As producer Barbosa was the responsible for all the voices of the closing ceremony for the Olimpic Games Rio2016. He has been performing and teaching France, Switzerland, Belgium, Argentina, Estonia, Poland and Brazil. Gal Costa, Criolo, Martinho da Vila, Roberta Sá, Xênia França, Verônica Ferriani, Marcelo Jeneci, Marcelo Pretto, e Giana Viscardi are names that trusted to Barbosa their voices recently.