Former NIGHTWISH singer Tarja Turunen will release a new heavy rock album, "The Shadow Self", on August 5 via earMUSIC.

Over the last couple of weeks, the Finnish solo artist has been teasing her fans on various occasions, revealing bits and pieces of the new disc.

"I am very excited to finally be able to share the first details of my new heavy rock album with all of you," said Tarja. "'The Shadow Self' is full of songs that are very dear to me.

"I cannot wait for you to hear the record that I believe is one of my heaviest albums to date.

"Keep your eyes open as there will be many surprises along the way to the album release on August 5. I really mean it. Surprises will follow very soon."

"The Shadow Self" is now available for pre-order in various formats, including standard CD and special edition CD+DVD.

Tarja will perform songs from her upcoming album for the first time on festival dates this summer.