Premise: Gabriel Julio Fernández Capello (born (1964--) 24, 1964 in Buenos Aires, Argentina) is a musician and composer better known by his stage name Vicentico. Co-founder and vocalist of the band Los Fabulosos Cadillacs along with Flavio Cianciarulo. He was part of the group since its creation in 1984 to the year 2001, when he began a solo career as a singer.
Hypothesis: Vicentico wrote every song he sang