Description : Armando Vega Gil and Sergio Arau playing during the last concert of “Botellita de Jerez” in Mexico City, Mexico. November 18, 2012. Botellita de Jerez was an influential Mexican Rock band formed in Mexico City in 1983. Its original and most popular alignment consisted of guitarist Sergio Arau, bassist Armando Vega Gil and drummer Francisco Barrios “El Mastuerzo”. The band created a rock style they named “guacarock”.