Premise: Elenco is a Brazilian record label created in 1963 by Aloysio de Oliveira. It was a major factor in the development of the Bossa Nova styles, also releasing samba, jazz, and spoken word recordings. It is often considered as one of the most influential labels in the Bossa nova and MPB genre.
Hypothesis: Aloysio de Oliveira had a large part in creating Bossa Nova styles in 1963.