“I only used the back pickup. Ozzy hates the sound of the front pickup. He calls it the ‘cow tone’”: Bursting with ideas but deferential to Ozzy Osbourne, a young Zakk Wylde had interesting guitar instructions upon joining the legendary frontman's band

Ozzy Osbourne (left) and Zakk Wylde perform at the Poplar Creek Music Theater in Hoffman Estates, Chicago, Illinois on July 12, 1989.

“Black Sabbath are my all-time favorite band, and I’m Ozzy’s biggest fan,” Zakk Wylde related to Guitar World in 1989.

Fairly new to the Osbourne stable at the time, Wylde was, of course, filling in some massive shoes – Jake E. Lee, Randy Rhoads, and Tony Iommi before them.