Dallas, Texas guitar guru John E. Davis performs a live cover of Ozzy Osbourne’s “I Don’t Know” from the album “Blizzard of Ozz.” Using a Fender Stratocaster, DiMarzio Pickups, stereo Crate XT10 practice amps, Boss SD-1 Overdrive and Boss effects pedals. Visit www.TexasRockGuitarist.com for more info.