He started producing in 2005 and his track Virus soon reached international audience when included by fellow Martín García on his guest set for UK"s Kiss FM.
Under the influence of such artists as Frankie Knuckles, David Morales and Danny Tenaglia, in 1991 Guillermo Quero began his career as the warm-up DJ at Reflex club in Quilmes, south of Buenos Aires. A year later, he became the main resident.
Identified with house, he also started playing music at different radio shows devoted to electronic culture and, in 1993, he stepped into his second residency at Nexo, a six thousand people venue located in Lomas de Zamora, where he stood out as a clear referent among the DJs of the southern city.
In 2003, Paul Oakenfold picked him as the winner of the first Heineken Thirst Contest in Argentina and he also joined the Creamfields Buenos Aires line-up since that year on. After headlining a festival in Paraguay and playing with the likes of Nick Warren and the Australian trio Infusion,