Maná is a pop rock and latin rock band from Guadalajara, Jalisco, Mexico, whose career has spanned more than three decades. They have earned three Grammy Awards, five Latin Grammy Awards, five MTV Video Music Awards Latin America, four Premios Juventud awards, nine Billboard Latin Music Awards and 13 Premios Lo Nuestro awards.
Their sound has been described as drawing on pop rock, Latin pop, calypso, reggae and ska. They initially received international commercial success in Australia and Spain and have since gained popularity and exposure in the US, Western Europe, Asia, and the Middle East. Their worldwide sales stand at more than 25 million albums as of 2011.
The group was formed in 1978 by José Fernando "Fher" Olvera (vocals) and Gustavo Orozco (guitars) along with brothers Juan Diego Calleros (bass guitar), Ulises Calleros (guitars), and Abraham Calleros (drums and percussion). They initially formed to play cover versions of songs by artists they admired. They called themselves the Green Hat Spies, but soon shortened this to Green Hat, and then, focusing on their Latin roots and Spanish-language repertoire, to Sombrero Verde (the Spanish translation of Green Hat).
In 1981, they released their first album called Sombrero Verde on the Ariola label. It included the singles "Vampiro," "Professor," "Long Time," and "Despiértate."
Their second album, a collaboration with Cisne Raff, was called A Tiempo de Rock and was released in 1983. Singles included "Laura," "Hechos Nada Más," and "Me Voy al Mar".
In 1984, guitarist Gustavo Orozco and drummer Abraham Calleros left the group. The remaining three members of Sombrero Verde then posted a classified newspaper advertisement seeking a drummer and found Alex González.

Source : www.wikipedia.org