Band talks riffs, "studio secrets" and Cliff Burton's impact during two-part episode of drummer's 'It's Electric'
Musician criticizes sisters' controversial line featuring their faces superimposed over artists, band logos
"With the passing of Lemmy, it's really, really important for me to see MotÃ¶rhead acknowledged in that," Metallica frontman says
Also, band books pre-Super Bowl gig in San Francisco
Tape will come out on Record Store Day, followed by an expanded edition this summer