James Hetfield is an American musician, singer and songwriter known for being the co-founder, lead vocalist, rhythm guitarist and main songwriter for the American heavy metal band Metallica. Hetfield is mainly known for his intricate rhythm playing, but occasionally performs lead guitar duties and some solos, both live and in the studio. 

Kirk Hammett is the lead guitarist and a songwriter in the band Metallica and has been a member of the band since 1983. In 2003 Hammett was ranked 11th in Rolling Stone's list - The 100 Greatest Guitarists of All Time. 

Robert Trujillo is a bassist who played with Suicidal Tendencies, Infectious Grooves, Black Label Society, Jerry Cantrell, and Ozzy Osbourne's band before joining Metallica in 2003.

See more at www.metallica.com. 

A portion of profits from the sale of Metallica's strings go to All Within My Hands: All Within My Hands is dedicated to creating sustainable communities by supporting workforce education, the fight against hunger, and other critical local services. See more at allwithinmyhands.org.

Photo Credit: Tim Saccenti