For the first time, a group of a cappella music – a technician that uses the voices of its members, exclusively – will be on the stage of Rock in Rio. The gauchos from Voice In have been standing out in the music scene due to their talent and creativity in playing songs. The Voice In is formed by one beatboxer (Luiz Kremer), two mezzo-soprano (Débora Neto and Ariane Wink), one tenor (Rafael Strey) and one bass (Felipe Andrade). The vocal group set is composed of pop songs interpretations and original medleys, with their own musical arrangements. The group has thousands of followers on social networks and their videos have more than 20 million views. For the first time, Rock in Rio will have an a cappella performance.