Heavy metal�s Anthrax might have called its debut album �Fistful of Metal,� but after three decades of punishment to his hands, drummer Charlie Benante learned the hard way that his fists were flesh and bone after all.

Benante needed surgery in 2013 to address a long-running battle with carpal tunnel syndrome. As he recuperated, he was sidelined for some of the band�s tour dates. That downtime had an upside, though, as Benante�s convalescence produced a prolific burst of songwriting that formed the basis of the group�s new album.

�I would become so possessed sometimes with playing by myself and writing songs that I would forget what I was doing,� Benante said.

While Benante, 53, is primarily known as Anthrax�s drummer, he is also a guitarist and has been the band�s primary riff generator for most of its 35-year history.

When Anthrax began work on a follow-up to 2011�s surprisingly successful �Worship Music,� Benante brought 20 song sketches to his writing partners, guitarist Scott Ian and bassist Frank Bello. Working with double the amount of material they usually draw from, the three finished a dozen songs for the new album, �For All Kings,� which comes out Feb. 26.

This songwriting trio relies on an established � albeit somewhat loose � composition method that begins with Benante�s sketches.

�We get in a room and we just start arranging, we start jamming,� Ian said. �And we do it the same way we did it 30 years ago. We�re writing for ourselves, as if really nobody else cared.�

As one of heavy metal�s Big Four � along with Metallica, Slayer and Megadeth � Anthrax helped reshape the genre in the 1980s by adding a more brutal attack and a punk sensibility. To that basic template, Anthrax adds a strong melodic sense in a way that distinguishes it from its contemporaries.

Although Benante, Ian, 52, and Bello, 50, work collaboratively, each has a specialty in the songwriting process. Once Benante�s riffs are hammered into full arrangements, Bello comes up with melodies. Ian writes lyrics, which often reflect an approach to life that is hopeful at the individual level and relentlessly bleak at the collective level.

�As an optimist by nature, I also have a very nihilistic view of this planet, because I think it is a realistic view,� Ian said. �That�s why I live in a bubble with my family and my friends. I only peek outside that bubble once in a while.�

When he does emerge, Ian�s assessment of humanity is grim. After al-Qaida-linked gunmen slaughtered 12 in an attack on the French satirical newspaper Charlie Hebdo, for instance, Ian�s rage spilled out in lyrics for �Evil Twin,� released as a single in October.

Lead singer Joey Belladonna channels Ian�s anger on such lines as �You represent your discontent / Slaughtering the innocent,� that lead into a soaring, singalong chant of �You�re no martyrs.�

�We�re still murdering each other over the same� things �that people were murdering each other over thousands of years ago � over whose god is better than whose god,� Ian said. �The fact that we haven�t moved past that, I think pretty much speaks volumes on the human race.�

Anthrax added �Evil Twin� to its live shows for a fall European tour with Slayer. The song took on a greater resonance after the Nov. 13 massacre at an Eagles of Death Metal concert at the Bataclan in Paris. Anthrax continued with its tour, though there were some jangled nerves in the aftermath.

Ian said the band was resolved to keep the tour going in the face of tragedy.

�It�s our job to entertain people. That�s what we do,� he said. �We give people an alternative for a couple of hours every night to go and have fun. We�re going to put our heads down and go to work, just like we�ve done for the last 30 years. And we�re not going to let what happened at the Bataclan stop us from doing what we do.�

That sort of persevering attitude isn�t foreign to Anthrax. The group had an impressive run of critical acclaim and commercial success through the mid-1980s and early �90s. But by the turn of the millennium, a string of lineup changes, record company implosions, personal tragedies and fickle audience tastes had left the band rudderless.

That is why the group had modest expectations for �Worship Music.� But the album beat those expectations, earning critical acclaim and a Grammy Award nomination. The success reinvigorated Anthrax.

� �Worship Music� kind of reintroduced us to the world,� Ian said. �We could just be Anthrax and go on tour, and then write this record and not have to worry about anything else.�

Anthrax doesn�t stray far from its roots on �For All Kings.� Belladonna � who was in the band 1984-1992 and again in 2004-2005 � returned in 2010 and is fully entrenched in the frontman spot. Guitarist Jonathan Donais, who joined in 2013, is making his recording debut with the group.

Bello said the band took its time making the new album, emboldened by the success of �Worship Music� to be confident and comfortable in its own skin.

�We are hungrier now than we�ve ever been. And here�s why: I think we want to fight,� Bello said. �We feel like there�s a place that we belong. ... There�s something to strive for.�