I do think she is the weakest live performer of the three, except for stuff from Imaginaerum, this version of Slow Love Slow is phenomenal.
They also made a film based on Imaginaerum, with appearances by members of the band. It's really cool, I highly recommend it.
Got these about 6 months ago. Great for the price.
There are several post-human songs by Nightwish like Alpenglow and We Were Here, but imho not this really one..
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reddit dislikes cut & paste so I'll post my comment in https://hackmd.io/@rgbPIkIdTwSICPuAq67Jbw/r1t0HnGgi
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tl;dr The singers are the "genes" of whatever comes after us, not necessarily what you'd consider to be post-humans though.
$24 on Amazon. Shit, some of the Nightwish CDs might cost more.