I don't think you people get it, Metalcore is a genre that incorporates mixes of Extreme Metal music and Hardcore Punk music, where-as Deathcore is a mixture of Metalcore and Death Metal music. They play under the genre Metalcore as they use these blends, such as screamed and clean vocals, added in with a sound that is a fusion of Hardcore Punk and Metal. I don't know where the genre Melodic Hardcore came in on this page, but it's wrong, I don't care if a website says it's that, IT ISN'T TRUE!