Decapitated

Decapitated is a Polish Technical Death Metal band formed in 1996. Along with bands such as Vader and Behemoth, they are considered one of the most popular death metal bands in the Polish scene. The band has had numerous vocalist changes, having had 3 different vocalists in their 5-album discography. The band is also known for their technical proficiency, particularly the skills of their first drummer, the late Vitek Kieltyka, who died in 2007 at the very young age of 23. While not a mainstream success, the band is one of the most popular in the metal community, with many metal critics giving them top reviews and citing them as a 'band to watch in the 21st century', receiving the most acclaim for their 2006 album Organic Hallucinosis.

Decapitated provides examples of the following tropes:

Little Boy Blue Note: The members of the band were in their teens when their debut Winds of Creation was recorded in 2000. The youngest was drummer Vitek, who was 15 years of age.
Mohs Scale of Rock and Metal Hardness: They're a fairly solid 10.
Gorn: It's fairly obvious if you know what their name means.
Beyond the Impossible: Vitek could drum better at 15 than most modern metal drummers twice that age can drum today.
Vocal Evolution: When original vocalist Sauron left the band, the new vocalist (and the one after that) had a much higher, less guttural death growl akin to Nergal's.