The long-awaited premiere of Nightwish’s “Imaginaerum” and preceding live show was easily Finland’s music event of 2012. Fans, press, friends of the band, everyone and their grandma travelled from all over the world to be in Hartwall Areena on this past Saturday night. And it was absolutely worth it! Of course, the movie wasn’t the only matter of interest. As everyone should know by now, Nightwish had undergone yet another line-up change. After Anette Olzon was (no...