Armstrong was given his first guitar "Blue", a Fernandes Stratocaster, at the age of 11 by his father, Andy, who died soon after. He and childhood friend Mike Dirnt started Sweet Children, their first band which eventually developed into Green Day in 1987. They added drummer John Kiffenmeyer (Al Sobrante). Sobrante left the band to go to college as they were making waves and gaining popularity. Frank Edwin Wright III (famously known as Tre Cool) replaced him as the permanent drummer making the official line up of Green Day in 1989.