Lacuna Coil singer Cristina Scabbia says of the album: "It's called Delirium and there's tons of reasons for it. It's been a crazy couple of years for different reasons, for personal reasons and for a lot of things that we will disclose, or we will tell later.

"It's heavier than the previous albums we did, which is kind of surprising. A lot of bands are going the other way around, getting softer and more accessible."