My music style

In my life, I had many different styles of music. 10 years ago, i (I) listened (to) rock,hard rock, nu-metal. My favorite band has been "System of a Down" and my favorite song from them it is "Atwa". Years passed and my music changed. In At one (point of ) time I am listened to the band "Slipknot". I watched all their concerts. The best concert on (in)my opinion (was) in 2002 London. The concert was called "Disasterpieces".
Even now I really want to get to their concert. Over time, my style of music has become more hard  (harder)and moved on to alternative genres, such as deathmetal and deathcore. Currently, I prefer deathcore, slamming deathcore, technical brutal deathcore. In the mass, these styles are not popular, but this is another feature of this style. I really like the vocal in this music. For beginners, it will be a difficult to listen to vocals of this genre for a long time. A very low voice is used, which is called "growling" and "guttural". For the  a long time i  (I)am trying to learn this vocal skills, but me I need yet some time.