Very few musicians can claim they’ve influenced the genre their music belongs to. Even fewer can claim their music altered said genre within the short time frame of a few albums. Pop music had Michael Jackson, hip-hop had Dr. Dre — for grindcore it’s Pig Destroyer. As many grind fans will tell you, Pig Destroyer may not have started the grind movement but they certainly made it into what it is today — fast, brutal and scary. Reasons like these are why a band like Pig Destroyer can wait five years to release an album and still have fans chomping at the bit. Pig Destroyer’s long-awaited fourth album, “Book Burner,” seemed to get the award for metal Album of the Year from fans and critics alike, long before one note was heard. The band’s impressive recording history coupled with “Book Burner,” a 19-song blitzkrieg clocking in at just over the 30-minute mark that is thick with intensity and dark imagery. While the metal Album of the Year designation might seem a bit premature, Pig Destroyer’s “Book Burner” won’t be too far off. For the members of the band — vocalist J.R. Hayes (Enemy Soil), noise-sampler Blake Harrison (Hatebeak), drummer Adam Jarvis (Misery Index) and guitarist Scott Hull (Anal Cunt, Agoraphobic Nosebleed), grind’s mad scientists, writing and recording the new album has been just another day at the office. A theme with Pig Destroyer is the amount of time in between each album, as if the band were trolls, slaving away in a dungeon beneath a swampy forest, only to ascend every few years to deliver their creations to the world through drug-infused, booze-soaked tours, and then it’s back to the dungeon to begin again. But as Harrison explained in a phone interview with Buzzbin Magazine, things aren’t always what they seem. “Unfortunately we can only do little weekend jabs, here and there,” he said. “We are going to hit a lot of the places we haven’t been before. That being said, we all have day jobs, J.R.’s getting married … Scott has a wife and two kids. It’s a little rough for us to get out for two months. Right now we’re trying to focus on 2013.” So if the mighty Pig Destroyer wasn’t on the road for months on end, playing to sold-out crowds every night, then what took them almost five years to produce a new album? “There was a lot that happened,” Harrison said. “There were a lot of things that occurred during that time, which is why the gap in the records was so huge.” The “things” Harrison is referring to were a loss of their practice space, recording studio and longtime drummer, Brian Harvey. The foursome had set up shop for practicing and recording in Harvey’s parents’ home during most of Pig Destroyer’s existence until the day Harvey’s parents evicted them. “His mom, his dad basically wanted their house back,” explained Harrison. “No one’s to blame, but we are all in our 30s, and they said, ‘OK, guys — you can figure something out.’” The band built Visceral Sound, their Maryland-based studio, to practice and record in. They began writing material for a new album, when further disruption came from Harvey himself. After almost 12 years with the group, Pig Destroyer reluctantly decided to part ways with Harvey, who was unable to devote the time that the band required. Enter Misery Index’s Adam Jarvis. “We were really sad to see [Harvey] go,” said Harrison “But then we got Dave Witte (Municipal Waste), and that didn’t work out with scheduling issues and things like that. So we called Adam Jarvis, who we’ve known for a while. He stepped up to the plate. I think he knocked his takes out in two days. He did most of it without a scratch track and most without using a click [track]. He’s a beast, man!” Harrison went on to explain how Pig Destroyer took just more than a year to write and record “Book Burner,” describing the album as “leaner and meaner” then their previous work. “I remember a couple of years ago when we were talking about writing and Scott asked, ‘What do you guys want me to look at when doing the music?’ Me and J.R. said, ‘Short, fast and obnoxious.’”