ONZA was formed in Jerez de la Frontera (Cádiz) in February 1989 and is one of the leading Andalusian bands of progressive rock and the longest and most recognized within the Spanish progressive. They have recorded four studio albums that they published with different and prestigious European record labels specialized in the genre. They are continuators of the Hispanic progressive tradition but with their own style where they fuse jazz, rock, new age and moments of Andalusian rock. The experimentation, evolution and remodeling of compositional concepts and influences of the great bands of the genre are the basis of ONZA’s music. They have always risked in their compositions, they do not follow the orthodox schemes and sounds of progressive, that’s why they are original.