Mario Geison & Elcio Viola

Mario Geison and Elcio Viola first met in 1997, with Geison from Goiás and Viola from Tocantins. They began working together in Brazilian sertanejo music, a genre rooted in rural Brazilian traditions. Their song 'Mundo Diferente' came out in 2001 and became their breakout hit, giving the duo their first major recognition.

Their catalog includes albums like 'Mundo Diferente' from 2001, 'Sem Freios' from 2003, and 'Em Alta Tensão' from 2005. Other songs in their repertoire include 'Atenda', 'Cantando em Campo Grande', and 'Pedaladas Na Viola'. Geison handles vocals and guitar while Viola sings and plays the viola, a ten-string Brazilian guitar central to sertanejo music.

Some critics questioned their approach to the genre early on, suggesting it strayed from traditional sertanejo conventions. The duo maintained they were making music that reflected their own experiences. They continued releasing material through the 2000s with albums like 'Nosso Mundo' in 2009 and 'Sertanejo de Primeira' in 2012.