www.youtube.com/watch?v=GNrJAPNwQe0&list=PLrSFF4UV2JoJpeOySfZhiHDAkAvoW23RJ&index=1
Had to register to post in here :3
I am not sure how you define unknown/underappreciated, but these are some I have not heard many people mention (at least internationally):
Shade Empire
www.youtube.com/watch?v=rBqaWfnCRZE
Omnium Gatherum
www.youtube.com/watch?v=RsjHvaU5Aik
Turmion Kätilöt
www.youtube.com/watch?v=xBxi0rPBIeM
In Mourning
www.youtube.com/watch?v=YZ4ioEQ7okM
Bal-Sagoth
www.youtube.com/watch?v=JHe0Qpkktww
Mount Salem
If you're into early Black Sabbath, you might enjoy this.
httpsv://www.youtube.com/watch?v=6-SlLxeTdMk
ATHEOS - Technical Death
http://www.youtube.com/playlist?list=PL9346092E8EFB9032
http://www.youtube.com/playlist?list=PL07D79A025C035BD9
Anterior. I'm so sad that they have broken up. One of the best Melodic Death bands I've had the pleasure of hearing. Goosebumps every time.
http://www.youtube.com/watch?v=qyY83i74lvU
You sir, are awesome!
Turmion Kätilöt is epic. Ive really enjoyed the music from the Japanese technocore bands like Fear&Loathing in Las Vegas and Crossfaith but the vocals were always too weak for my tastes. Well found. And thank you for sharing!
Glad to hear you found something you like.
Channel zero is pretty good.
http://www.youtube.com/watch?v=C0YJQidF5fw
http://www.youtube.com/watch?v=0abnkjw-Mqc
http://www.youtube.com/watch?v=rRsdU-kh_pw
http://www.youtube.com/watch?v=3Vp6I6kRjTM
http://www.youtube.com/watch?v=xjEXb5hKRek
And the local Justin Biebers, but still good:
http://www.youtube.com/watch?v=uA-mSoD6NV8
Unsure if these are classed as metal, but definitely underappreciated in my opinion :)
www.youtube.com/watch?v=32Q4x112dAU&list=PLqWpe8Z5-neCzVmLxPeW1HK51O7O8FCrC
How can I bookmark this thread xD?
https://www.youtube.com/user/pellekofficial/videos
I would have to say this dude is kinda freaking AWESOME!
He also has his own band too.
Ron is the man. If you're into super heavy technical prog stuff look no further than Blotted Science, Ron's solo stuff and Spastik Ink.
Hope nobody minds some thrash in here. Here's some of my favorite usually under appreciated bands. Some are pretty famous or even legendary amongst the thrash crowd though.
Wargasm
www.youtube.com/watch?v=GVEOLONDoCE
Atrophy
www.youtube.com/watch?v=ZL2ZKEmMDCE
Devastation
www.youtube.com/watch?v=jK9CSsl4CfI
Exhorder
www.youtube.com/watch?v=tTTARyt7SoI
Coroner
www.youtube.com/watch?v=A_sAM7S7ZEY
Heathen
www.youtube.com/watch?v=TWQs1biKILg
Evildead
www.youtube.com/watch?v=g1KbRxNIeSw
Vendetta
www.youtube.com/watch?v=Y8uwPD5ZjJc
First off, Cult of Luna, one of my favorite metal bands. Second, Isis (the band, not the terrorists, haha)
I prefer Cult of Luna, but Isis has some great stuff too.
Cult of Luna - Genesis
https://www.youtube.com/watch?v=VHJwd0XblL8
Isis - Celestial (The Tower)
https://www.youtube.com/watch?v=4HTUAYVgPbI
They're considered Proto-Punk and it's unfortunate that they never got the chance to release more music.
Carach Angren
https://www.youtube.com/watch?v=ZDX-pPH9xAY
At The Gates
https://www.youtube.com/watch?v=URhmC865SGI
Ensiferum
https://www.youtube.com/watch?v=1s6Fz8BATWE
Exmortus
https://www.youtube.com/watch?v=OA2CnEfzTLw
Fleshgod Apocalypse
https://www.youtube.com/watch?v=8T0xOgMC6A0
Hour of Penance
https://www.youtube.com/watch?v=JOvxGnecSZc
Kalmah
https://www.youtube.com/watch?v=KupXKHhbr88
Netherbird
https://www.youtube.com/watch?v=6lYDUadMhiw
Nifelheim
https://www.youtube.com/watch?v=FWcNDb4am5o
Watain
https://www.youtube.com/watch?v=S8hqEeWX084
Really underrated band!
https://www.youtube.com/watch?v=7xk3ExshrPM