In the early 1990s, Sánchez formed a heavy metal band called Tierra Ácida (Acid Land) with his brother. Quintero joined them in 1993 "as they couldn't get a guitarist who would please Rodrigo". When a record deal for the band fell through in 1997, Sánchez and Quintero left Mexico City for the resort town of Ixtapa on the Pacific coast of Mexico. They played in beach-side bars and hotels for nine months where "we wanted to play a different kind of music, something we could make as our own".