Nightwish's music style is sharp and imposing, the classical passages are full of color, and the metal rhythm is unrestrained, which makes people excited. Their music is not cathartic, noisy or chaotic, but an ethereal feeling, floating-in the most appropriate word, floating, but this floating is not a simple floating, it is purposeful, ethereal and atmospheric, and it is an unprecedented feeling of gorgeous opening and ending.
Nemo, Sleeping Sun, Dead World, Patricide, She is My Sin and so on are all quite classic songs.
Breath of the Wilderness, a beautiful folk song, is absolutely amazing and pure music.