WATCH: Lady Gaga and Metallica's special performance at the 59th Annual Grammy Awards.

 

Lady Gaga joins American heavy metal band Metallica onstage tonight at the 2017 Grammy Awards wherein they gave a spectacular performance of the band's latest single "Moth Into Flame".

 

Watch the performance below:

 

Lady Gaga at the red carpet of the 2017 GRAMMYs.