In the latest studio update video Donockley says: "Tuomas writes really challenging parts, especially for the pipes. It's always nice to push the boundaries.

"It's progressive in its outlook. It's a lot different to Imaginaerum, although it's still absolutely Nightwish. There's probably some parts that will startle people - but it's not going to be cheesy. It sticks to its roots."

Jansen praises bandleader Holopainen's ability to bring the best out in his colleagues, saying: "He's triggering me to do new things, to find new sounds and borders. Usually it just fits - you can hear it in your head, as he must have when he was writing it. That's what's so great about him - he can do that in his mind."