The opening instrumental section features Metallica bassist Robert Trujillo fingerpicking a melodic bassline alongside James Hetfield's clean guitar. Trujillo's bassline is reminiscent of the late Cliff Burton's playing style. He told Exclaim!
he penned the opening instrumental in memory of the former Metallica bassist, who was killed in 1986 when Metallica's tour bus skidded off an icy road in Sweden.
"When I had written that, I was definitely thinking about Cliff," Trujillo said. "In a way, that to me is a tip of the hat to Cliff Burton and the spirit of Cliff. If you hear that little thing before 'ManUNkind', for me personally, that was with Cliff in mind."
Trujillo joined Metallica in 2003, following bassist Jason Newsted's tenure with the band.