Pantera started as a hair-metal band and eventually turned very heavy.
Sniped you.
The Beatles went from "I Wanna Hold Your Hand" to "Helter Skelter." And one of the heaviest tracks on their last album was literally (sub)titled "She's So Heavy."
Sum 41. Compare Order in Decline to Does This Look Infected or Chuck?
They have always had heavy elements but it seemed like they went heavier on Order in Decline.
Meshuggah.
Many of them have put on a few pounds over the years. But I don't think any of them got noticeably heavier. They have all stayed in fairly decent shape.Well in that sense, The Cure, The Smiths.
Ministry.Yeah, I thought they were two completely different bands that coincidentally had the same name for years.
Ministry.
Porcupine Tree
Ministry.