Yep, it’s true. They’ll perform together at the GRAMMY Awards.

James Hetfield is still recovering from an illness that warranted a doctor forbidding him to sing even a single note and after a whirlwind week that saw her tear it up at last weekend’s Super Bowl halftime show, Lady Gaga is showing no signs of slowing down as she readies for a world tour set to begin later this year.

For more on the unexpected pairing at this weekend’s GRAMMY Awards, click here.

Photo Credit: (L) huffingtonpost.ca, (R) billboard.com