Sui generis
In sociology, the "sui generis" is what has been externalized, then internalized in the overall public and becomes a part of society that simply exists in its construct. It is not something that is not thought to have been created, because it is imbedded in everyone's way of thinking and being. Instances include the idea of love, or going to school, or clothing belonging to a specific gender. These examples are "sui generis" for they simply exist in society and are widely accepted without thoughts of where they come from or how they were created.
Nito Mestre
Carlos Alberto Mestre (born August 3, 1952 in Buenos Aires, Argentina) known by his stage name Nito Mestre is an Argentine musician, founding member - along with Charly García - of Sui Generis, member of PorSuiGieco, bandleader of Nito Mestre y los Desconocidos de Siempre and a recording solo artist. "Sui Generis", was initially formed in 1969 by Charly García (keyboards and vocals), Nito Mestre (guitar, flute and vocals), Rolando Fortich (bass guitar), Juan Belia (guitar), Alberto Rodriguez (drums) and Carlos Piegari (vocals). Later on, Sui Generis became a duo as everyone left except for García. After the band split in 1975, Nito Mestre formed a new band called "Nito Mestre y los Desconocidos de Siempre" with Maria Rosa Yorio on vocals, Rodolfo Gorosito on guitar, Alfredo Toth on bass, Ciro Fogliatta on keyboards and Juan Carlos "Mono" Fontana as a drummer. In the early 80s, Nito pursued a solo career.