Héctor Omar Hoffmann Fenzel, better known as Sergio Denis (16 March 1949 – 15 May 2020) was an Argentine pop singer-songwriter, pianist and actor. He was born in Coronel Suárez, Argentina. His best known songs were "Yo nunca supe más de ti", "Cada vez que sale el sol", "Cómo estás, querida", "Te quiero tanto" and "Un poco loco".