Imaginaerum (also promoted as Imaginaerum by Nightwish) is a 2012 Finnish- Canadian musical fantasy film co-written and directed by Stobe Harju. It was developed with and features music from Finnish symphonic metal band Nightwish's seventh studio album of the same name; Nightwish's keyboardist and songwriter Tuomas Holopainen co-wrote the film. Imaginaerum, which is produced by Markus Selin from Solar Films Inc. along with Nightwish, is the feature film debut of Stobe Harju.

References:
https://en.wikipedia.org/wiki/Imaginaerum_(film)