In what Metallica hopes is a meaningful honor to Ronnie James Dio, the "One" band has contributed four songs to the Compilation album This Is Your Life, in honor of the Ronnie James Dio Stand Up and Shout Cancer Fund.
"It becomes more of an homage and respect thing rather than trying to copy the song," Metallica drummer Lars Ulrich said in an interview with Rolling Stone.
Premiering Monday, the band's track "Ronnie Rising Medly" is a nine-minute compilation of Rainbow, Dio's 1970s band, according to Rolling Stone.
Four years after Dio's death, the album raises money for cancer tribute and also includes the songs of musicians like Anthrax, Tenacious D and Slipknot.
According to Ulrich, the music is particularly personal to Metallica.
"Dio's music is so much a part of what's in Metallica's DNA, the harder, edgier, blues-based hard rock from the Seventies," Ulrich said, according to Rolling Stone.
"Ronnie's music, and what he was, was part of my life," he added.
Although the cause may be something that is new to Metallica, this is not the band's first charity work. In 2013, the band's performance at Roskilde Festival in Denmark raised $250,000 for sick children through Orange Donation, according to a press release of the festival.
The metal band also plans to perform at a charity event in May, where proceeds will be donated to the Pediatric Cancer Program at the UCSF Benioff Children's Hospital, according to 3 News.
In addition to the band's work on the This Is Your Life compilation, according to Anti Music, Metallica is currently finishing up a South American tour and will begin a string of European dates starting in May.
The heavy metal band also recently premiered the song "Lords of Summer," their first new material since 2008.