Eh, I don't really think it's uncharted territory for Nightwish— they dabbled in folk on
Dark Passion Play with "Last Of The Wilds," and even a good few songs from their
début had traces of it. If anything, "Slow, Love, Slow" is the real experiment on
Imaginaerum. I mean, did anyone see a jazzy R&B track coming?

Stratovarius - "Witch Hunt"