The resurgence of prog rock. Absurd time signatures & single-track albums return:

Even so, it’s hard to see how OK Computer’s multi-platinum success can have done the prog scene anything but good by reawakening a public interest in long, episodic songs, retooling the gloomy mein of Dark Side of the Moon for a new decade. Around the same time, metal - traditionally progressive rock’s best mate, with its emphasis on musicianship, partiality for excess and inability to resist a bit of lyrical sword and sorcery - began to rekindle its friendship with prog in the aftermath of grunge.

I’ll have to dig out my PFM.