The instrumental track, 'High Plains Drifter', shows a different side to the guitar legend, with a Flamenco and Western sound to it. The song was inspired by Clint Eastwood's 1973 western film of the same name.
Hammett told Planet Radio:
“It initially came from a Flamenco piece I had written. It was a two-and-a-half-minute piece, and I really liked it, but it was one of those riffs that would be hard to integrate into Metallica.
"I knew I wanted to do something with it, even though it came out spontaneously... I was determined it would have a life. It would have its moment.”
Hammett is set to be the first current-member of Metallica to come out with a solo release. 'Portals', which will have four tracks, is out April 23rd.
Check out 'High Plains Drifter' up top, and the 'Portals' track list below.
Portals EP track-listing:
1) Maiden and the Monster
2) The Jinn
3) High Plains Drifter
4) The Incantation