The history of metal music is not an easy story to tell. With over 45 years of the world's most brutal music genre having already passed, the realms of progression, brutality and experimentation are constantly expanding thanks to both metal legends and new school heroes. Despite the difficulty of the challenge, rock journalists Jon Wiederhorn and Katherine Turman have crafted the upcoming book 'Louder Than Hell: The Definitive Oral History of Metal,' which will see a May 14 release date.

To create a truly definitive portrayal on metal music, 'Louder Than Hell' was assembled from more than 300 interviews with metal's finest icons, including members of Metallica, Megadeth, Iron Maiden, Slayer, Death, Motley Crue, Pantera and many more. As if 300 interviews wasn't legitimate enough, the comprehensive book will include an introduction by Scott Ian of Anthrax and an afterword by Judas Priest vocalist Rob Halford.

'Louder Than Hell' promises to deliver all the info without censorship, delving into topics such as traumatic upbringings, drug addiction and bizarre sexual exploits, along with stories of the music business, songwriting, touring and a lot more.

Metal musicians themselves have come out to praise 'Louder than Hell,' along with its authors. “Katherine Turman and Jon Wiederhorn know metal," gushes Rage Against the Machine guitarist Tom Morello. "Louder than Hell is an amazing gathering of different breeds of heavy metal rockers telling the tales metal fans want to hear.”

Heavy metal legend Alice Cooper also endorses the book. “This is the book every metal fan should own," says Cooper. "A fascinating high-octane chronicle of metal mayhem that takes readers on a wild ride, from metal’s earliest days to the head-banging present. I’m not saying this just because I’m in the book, but . . . if you love metal, great stories, and music history told by the people who made it, then Louder than Hell is a must-read.”

Jon Wiederhorn is a senior writer for Revolver magazine, a former editor of MTV2's Headbangers Blog and has worked for publications such as Rolling Stone, Spin, Entertainment Weekly and Guitar World. Wiederhorn has also penned a biography on Ministry mastermind Al Jourgensen, 'Ministry: The Lost Gospels According to Al Jourgensen,' which will see a July 2013 release.

Katherine Turman currently produces the syndicated radio show 'Nights with Alice Cooper,' and has written for publications such as Metal Hammer, Los Angeles Times, Rolling Stone and RIP, the last of which she was the editor.

Get ready for the release of 'Louder Than Hell: The Definitive Oral History of Metal' on May 14. To pre-order the book, click here.

Check Out a Video of Alice Cooper Promoting 'Louder Than Hell'