Well, I've seen lots of lists here and I have to say, a noticeable percentage of these lists are great references for anyone interested in music, but I noticed that something new was missing.

What I'm going to do here, is to gather a lot of bands that have gone through major overhauls and transitions in their music, REGARDLESS OF WHETHER THEIR MUSIC IS GOOD OR NOT.

As this list is going to be informative, your suggestions and participation is GREATLY APPRECIATED so yeah, it's not your typical favorite album/artist list, it's not your typical best of X, it's going to be done using information.

I'm gonna put a HALL OF FAME for more prominent bands and artists in the scene, although it's more of a blacklist as they won't be added to our list as to make way for lesser known cases. If you have any other suggestions for the HALL OF FAME, then you're welcome. I would sort out the list based on alphabets once we reach a certain number.


HALL OF FAME:
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Avenged Sevenfold - Metalcore to heavy metal.
Alcest - Primitive black Metal to shoegazing atmospheric black pop rock or whatever that is.
Amon Amarth - Grindcore, then Johan Hegg happened.
Amorphis - Death metal to a blend of progressive, folk and heavy metal.
Anathema - Death/doom pioneer goes soft and ethereal.
Anthrax - The critically acclaimed New Yorkers turned alternative for a short period of time, but we can still blame them for rap metal.
Bathory - Proto-black metal influenced by Motorhead, became a pioneer of viking metal.
Behemoth - (I'll take the MSer's words for this one) Blackened death metal and of course black metal to death metal.
Burzum - Early black metal to skaldic ambient music.
Celtic Frost - Speed/death/thrash metal to gothic/doom metal.
Cradle Of Filth - black metal (with elements of death metal) to gothic or extreme metal.
Cryptopsy - "The Unspoken King" speaks for itself.
Cynic - Early prog death days overshadowed by a soothing jazz fusion approach.
Death - Obvious even for the average non-metalheads. Pure death metal to progressive extreme metal.
Dimmu Borgir - Symphonic elements were added later to their Norwegian brand of black metal.
Emperor - Dimmu Borgir syndrome.
Empyrium - Added more acoustic guitar to their music.
Entombed - A classic death metal act...suddenly Death N Roll happens. Seriously?
In Flames - I don't even wanna mention what happened there.
Judas Priest -From blues rock into heavy metal.
Katatonia - Black/doom, later playing alternative gothic metal.
Kreator - The industrial experimentations in the 90's were a departure from their teutonic thrash metal sound.
Led Zeppelin - Just like what happened with Judas Priest
Machine Head - Supercharger.
Mayhem - Experimentation, unorthodox transitions, still haunted for not being kvlt anymore.
Metallica - Horseman becomes the table. Thrash metal to...modern heavy/thrash metal. Everyone knows Load and ReLoad but in case you don't, in that period Metallica was hard rock.
Megadeth - Thrash metal to...wait, hard rock? Dave's so angry, he can make everyone disappear by closing his eyes.
Moonspell - Black metal to symphonic gothic metal or whatever you wanna name it.
Morbid Angel- We love you, guys. But we hate industrial death metal, it's as bad as Illud Divinum Insanus.
Neurosis - Hardcore evolving into "post-metal/tribal" music.
Opeth - Progressive extreme metal to 70's rock.
Pain Of Salvation - Taking prog music to a whole new level.
Pantera - Glam, glam, glam. Alright, just the visuals, but the music was more of a bright heavy/hard rock mania anyway.
Paradise Lost - death/doom to electro/gothic and then back to normal, ordinary gothic
Sepultura - Brazilian music is fine, guys. Unfortunately we miss your early thrash albums.
Type O Negative- I'm not sure if "Slow, Deep and Hard" can be considered hardcore gothic or gothic thrash. But that's how they evolved into this industrial/gothic doom band everyone's so fascinated by.
Ulver - Early black/folk metal to avant-garde chamber music.
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