HERE you can find The Rasmus singer interview at the Dome 52 and an article from December Sonic Seducer, where he talks about Anette.
"Also the feathers are there again, on the cover of the Best Of and the cover of the single “October & April” (release 13 Nov) that you have recorded with Nightwish’s Anette Olzon.
We wanted to have a cover that represents the last decade. I think this image especially reminds of this time. But I also have my feathers here in Singapore and had them long before “In The Shadows”, they just were white back then. Actually, the song is 12 years old. We drank much wine and had fun to write a parody of all of these boy band songs. We imagined this picture of us, like in the pouring rain, the shirts wet and open, on our knees and looking up to the sky – it was much fun! I didn’t know Anette before, I never met her personally. So I called the keyboarder of Nightwish and asked whether I could ask Anette to sing a duet with me. That felt very weird, as if you’d call the father of a girl (giggles). But he was very enthusiastic and immediately contacted her, she possibly is a fan of The Rasmus and even sang songs of us with her cover band earlier. I only saw her at the video shooting in Helsinki. But we phoned very much and she is this type of person with which you can easily get along and about whom you believe you know her for a long time"
Anette Olzon Central@ Your 1st Source on ex-Nightwish singer Anette // Wednesday, 2 December 2009