In the interview video, he explains that while the follow-up to 2011's Imaginaerum was inspired by Charles Darwin's theory of evolution, there's more to the 11-track release than that.

Holopainen says: "Not all the songs deal directly with the issues of nature and science. But there is a pro-life thread going through the album." He, Floor Jansen and Marco Hietala also explain why the final track, The Greatest Show On Earth, had to be 24 minutes long. Check out the video - here.

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