El Gran Silencio is a rock en español band from Monterrey, Mexico that blends a variety of rock, reggae, dancehall, and dub influences with traditional Latin American musical forms such as cumbia, vallenato and banda. Current members include brothers Cano and Tony Hernandez, Isaac "Campa" Valdez, Julian "Moco" Villarreal, and Ezequiel Alvarado. Their first album (1999) is titled Libres y Locos, which means 'free and crazy' in English. It was on this album that they scored a hit with the song "Dormir Soñando...

Biography from Wikipedia