Legendary Swedish guitarist Yngwie Malmsteen will release his autobiography entitled "Relentless: The Memoir" on May 21 via Wiley.

The book's official description: "Yngwie Malmsteen's revolutionary guitar style — combining elements of classical music with the speed and volume of heavy metal — made him a staple of the 80s rock scene. Decades later, he's still a legend among guitarists, having sold 11 million albums and influenced generations of rockers since. In 'Relentless', Malmsteen shares his personal story, from the moment he burst onto the scene seemingly out of nowhere in the early '80s to become a household name in the annals of heavy metal. Along the way, he talks about his first bands, going solo, his songwriting and recording process, and the seedy side of the rock business."

The 288-page book is available for pre-order via Amazon.

On October 1, 2012, music journalist Anders Tengner's unauthorized biography of Malmsteen, "Såsom I Himmelen, Så Ock På Jorden" (English translation: "As Above, So Below") was released in Sweden via Bokfabriken. The 350-page book is based on more than 50 interviews with people who were really close to Yngwie during his life. It gives a unique and sensitive insight into the raging life of the guitar god. It is a tribute to the biggest Swedish rock star ever, but a tribute that doesn't ignore the hard and crazy times.

"Såsom I Himmelen, Så Ock På Jorden" contains 64 pictures taken by some of the world's greatest rock photographers, as well as unique and private photos.

According to a press release, "This is probably as close as you can get to Yngwie: The loneliness, passion, betrayals, scandals, domestic abuse, drugs, sex and, of course, the music that make up his life."

The book's foreword was written by legendary hard rock singer Joe Lynn Turner (RAINBOW, DEEP PURPLE), who previously played with Malmsteen.