As promised, Metallica debuted a brand-new song, ‘The Lords of Summer,’ during the first concert of their ‘Metallica by Request’ tour last night in Bogota, Columbia. 

Thank god they didn't turn into a EDM group in the 5 1/2 years since their last studio album 2008's "Death Magnetic".

So what do you think so far?? They plan to release a song almost every night on their 'Metallica By Request' Tour, so keep checking back to hear the new tracks here.