Their stuff from that album onwards is still LESS melodramatic than when they have Tarja, but they do get more Sierra Levels Of Prog.
The last track on the newest album has this breakdown on Genius.
Nightwish’s longest song to date, “The Greatest Show On Earth” is a 24 minute progressive conceptual song broken into five distinct movements:
I – Four Point Six
II – Life
III – The Toolmaker
IV – The Understanding
V – Sea-Worn Driftwood
The overarching theme of the song is the development of life on Earth and, hence, evolution.
The song (and the album as a whole) draws inspiration from Charles Darwin’s On the Origin of Species, the paper which founded the idea of evolutionary biology.
The song also draws heavy influences from Richard Dawkin’s 2009 book The Greatest Show on Earth: The Evidence for Evolution, with samples taken from the audiobook narrated by the author being used in this song.