Guitar string-maker Ernie Ball is lifting the curtain on the latest episode of String Theory, this time with Metallica guitarist Kirk Hammett in the spotlight, reports Adweek.

The web video series features sit-downs with influential players from a range of genres - Joe Don Rooney of Rascal Flatts, Justin Chancellor of Tool and Billy Idol's longtime guitarist Steve Stevens - and lets the camera roll as they talk about their first guitars, their influences, their personal styles. In Hammett's case, the result is an unusually intimate, often stirring video showing the high priest of thrash discussing not just his career, but his emotional life.

"If I'm bummed out, I'll go to my guitar," says Hammett, still a credible stage threat at 53. "A lot of times when I'm really stressed out or I'm dealing with anxiety, I'll just play until I calm down. When I have this feeling inside that needs to get out, the guitar helps that feeling. It's a creative tool, but on the other hand, it's also a rehabilitative, emotional, spiritual tool that I use to feed my inner self."

Watch the video below, and read more at Adweek.com

In the clip below, Metallica pull back the curtain in a new behind-the-scenes video chronicling the making of their "Moth Into Flame" video courtesy of Rolling Stone. Director Tom Kirk serves as a guide throughout the clip, discussing everything from the labor-intensive shoot to his desire to create a video that blends a retro rock and roll sensibility with contemporary elements.

Kirk also chats about his love for Metallica, saying, "As soon as I understood the power of guitars and drums and bass and insane vocals, Metallica was there. They've always been on my radar as a band to work with."

Metallica previously posted the video below, filmed at Metallica HQ during the writing and recording of "Plow", the song that later became "Moth Into Flame", from the album Hardwired...To Self-Destruct - available everywhere on November 18th.

Hardwired…To Self-Destruct album details follow:

Deluxe Edition (Digital Download and CD)

Disc One
“Hardwired”
“Atlas, Rise!”
“Now That We’re Dead”
“Moth Into Flame”
“Am I Savage?”
“Halo On Fire”

Disc Two
“Confusion”
“Dream No More”
“ManUNkind”
“Here Comes Revenge”
“Murder One”
“Spit Out The Bone”

Disc Three (Bonus)
“Lords of Summer” (2016)
“Ronnie Rising Medley”
“When a Blind Man Cries”
“Remember Tomorrow”
“Helpless’ (Live at Rasputin Music)
“Hit the Lights” (Live at Rasputin Music)
“The Four Horsemen’ (Live at Rasputin Music)
“Ride the Lightning’ (Live at Rasputin Music)
“Fade to Black” (Live at Rasputin Music)
‘Jump in the Fire” (Live at Rasputin Music)
‘For Whom the Bell Tolls’ (Live at Rasputin Music)
“Creeping Death” (Live at Rasputin Music)
“Metal Militia” (Live at Rasputin Music)
“Hardwired” (Live in Minneapolis)

Deluxe Box Set (3LP + 1CD)

Disc One Side A
“Hardwired”
“Atlas, Rise!”
“Now That We’re Dead”

Disc One Side B
“Moth Into Flame”
“Am I Savage?”
“Halo On Fire”

Disc Two Side C
“Confusion”
“Dream No More”
‘ManUNkind”

Disc Two Side D
“Here Comes Revenge”
“Murder One”
‘Spit Out the Bone”

Disc Three Side E (Bonus)
“Lords of Summer” (2016)

Disc Three Side F (Bonus)
“Hardwired” (Live in Minneapolis)

Bonus CD
“Ronnie Rising Medley
“When a Blind Man Cries
“Remember Tomorrow
“Helpless (Live at Rasputin Music)
“Hit the Lights” (Live at Rasputin Music)
“The Four Horsemen’ (Live at Rasputin Music)
“Ride the Lightning’ (Live at Rasputin Music)
“Fade to Black” (Live at Rasputin Music)
‘Jump in the Fire” (Live at Rasputin Music)
‘For Whom the Bell Tolls’ (Live at Rasputin Music)
“Creeping Death” (Live at Rasputin Music)
“Metal Militia” (Live at Rasputin Music)

“Hardwired” video:

Making of “Hardwired”:

Metallica are confirmed to open Copenhagen’s Royal Arena in February. A band statement reads: “We are very honored to have the super special, very unique opportunity to once again be the first event ever held in a brand new facility and this time it is in a city very near and dear to our heart, Copenhagen! We will be opening the doors of the Royal Arena for the first time on February 3rd and 5th, 2017 and as of this time these shows are our only scheduled European appearances of ’17, until the fall at the earliest. So if you need a Metallica fix soon hopefully you can make it to Copenhagen!”

“We promised we would be back very soon with an update and we didn’t wait too long,” says Metallica. “The ‘Tallica touring machine fires up again in late March of 2017 as we roll to South America for our first ever South American Lollapalooza experience brought to you by our friends at C3 Productions. Dates/venues are below and tickets are on sale now, so visit the site(s) of your choice or better yet hit all three!”

Lollapalooza Brasil - March 25th - 26th
Interlagos Racetrack in São Paulo

Lollapalooza Argentina - March 31st - April 1st
Hippodrome San Isidro in Buenos Aires

Lollapalooza Chile - April 1st - 2nd
Parque O’Higgins in Santiago

Metallica continue: “We’re looking forward to three amazing festivals over two weekends and that Lolla vibe of soaking up the sun and listing to music from all genres. Hope to see you there!”