During Michael Schenker’s (UFO etc.) show in San Jose, CA last night (May 3), he was joined onstage by Metallica legend Kirk Hammett. The two shredded covers of UFO’s “Natural Thing” and Scorpions’ “Blackout.” Check out some fan-filmed footage of “Blackout” below: https://youtu.be/1mZOrnEEb_c An honor to share the stage w/ Michael Schenker, Herman Rarebell &…