Rosario started playing the drums when he was 9, before taking classes for 6 years in the main local music school.
At the age of 15, he started playing in bands such as Abracadatrash, Damage and then Clean Dirt, with which he went touring in the US to storm places like the Whiskey a Go Go, the Roxy and other small clubs. The clean Dirt album was produced by Harris Johns (Kreator, Tankard, Immolation, also…).
He joins Almøst Human in 1997 and still is an active member of Almøst Human and Swiss pop band Disused.
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