Answer
In 1987, Zakk Wylde joined Ozzy Osbourne's band. He was only 19 years old at the time. Wylde quickly became a fan favorite, and he helped Osbourne to release several successful albums, including No Rest for the Wicked and Ozzmosis. Wylde left Osbourne's band in 1995, but he has since rejoined the group on several occasions.