Metallica has released a demo version of "Master Of Puppets" which was recorded in a garage in June of 1985. This song will appear on the Remastered Deluxe Box Set & 3-CD Expanded Edition of the album, due out November 10th, 2017.
This demo is worthy of listening to over and over again. The sound quality of the demo is really pretty exceptional considering where it was recorded and it being done in 1985. Totally different solos and Hetfield sounding so young while throwing out some powerful vocals make this one for the history books.