The masters of metal, Metallica unleashed a brand new studio demo version of the song they debuted recently in South America called 'The Lords of Summer.' 

This is Metallica's first new single since 2008's 'Death Magnetic.' Now that you've listened to the 'Garage Demo Version' of 'Lords of Summer' above, let us know what you think by casting your vote below.

You can also see Metallica perform 'Lords of Summer' live in Bogota recently through a bunch of fan shot footage in the video below. It is slow to start but picks up fairly quickly and gets thrashin' real quick, so give it a chance and watch/listen to the entire clip.