Sui Generis was an influential country band from Argentina formed by musicians Charly García and Nito Mestre. Active during the first half of the 1970s, the band's success earned it a lasting following throughout South America. From Wikipedia
The memoir La magia de estar aquí—coauthored with Marcelo D. Fernández Bitar—revisits his path through Argentina’s seminal rock bands under the Planeta imprint.