Metallica will play this year's Grammy Awards show with Lady Gaga, three years after their surprise turn on the same show with a classical pianist. Gaga announced the collaboration on Twitter just days after a celebrated halftime performance at Super Bowl 51.

As strange as her pairing with Metallica seems, Lady Gaga has plenty of rock connections. Originally known by her given name of Stefani Germanotta, the singer-songwriter has been covering Led Zeppelin at least as far back as 2006, when she belted out "D'yer Mak'er" at the Bitter End.

Last year, Lady Gaga offered an impromptu – and quite impressive – a cappella rendition of "Black Dog" on The Howard Stern Show. Iron Maiden's Bruce Dickinson has praised Lady Gaga in the past, noting her "great sense of drama." Gene Simmons and Anthrax's Scott Ian are also fans.

The 59th annual Grammy Awards ceremony airs Sunday on CBS. Paul McCartney, Bob Dylan and David Bowie earned multiple nominations this year. Metallica shared the stage with classical pianist Lang Lang during the 56th annual show in 2014, performing "One" from 1988's ... And Justice for All.

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