This is coming from a 21 year old's perspective.
I'm going to list a few hardcore bands that everyone should listen too, they have sub elements of punk, melodic, and metal.
Before I list anything, please note that music today has taken elements from so many types of sounds
it's hard to categorize bands into a specific genre due to personal opinion.
Integrity - Classic Hardcore
Poison the Well - Early Melodic/Hardcore they have changed their sound many times.
Hatebreed - Respected Hardcore
The Ghost Inside - Melodic Hardcore
Deez Nuts - Punk Hardcore (I refuse to acknowledge "rapcore")
For The Fallen Dreams - Melodic Hardcore
Stick to Your Guns - Melodic Hardcore (More traditional sounding)
American Me - Hardcore/Metal
and before hardcore fans come try to smash be, I prefer Youth Crew interests over Hardline, if you don't know what that is - you need to look it up, that's hardcore history.
Now when thinking hardcore and metal you can't forget Deathcore.
Deathcore and Grindcore must be acknowledged as well, they took more abrasive sounds of the era to create a great feel and familiar sound to many people.
Despised Icon - The most respected Deathcore band
whitechapel - Epic Deathcore band
Job for a Cowboy - Deathcore
Emmure - Early albums were great
The Acacia Strain - Heavy Deathcore
HEAVEN SHALL BURN - German Heavy Metal/Deathcore (Great band)
Carnifex - Well known Deathcore band
Winds of Plague - Another respected Deathcore band
All Shall Perish - Well known Deathcore
Suffocation - Some say Death Metal, but they are epic.
Whisteria Cottage - RIP Deathcore band
Underneath the Gun - Deathcore/Deathmetal - Vocals are sick
I could go on and on in deathcore, but the scene doesn't stop there...
Lets not forget Post-hardcore & Metalcore. The bands are growing more than any other sound out there.
Saosin - Legend Post-hardcore
Underoath - Legend Post-hardcore
Alexisonfire - Legendary Post-hardcore
Taking Back Sunday - OLD TBS, "A Decade Under the Influence" Go listen to that song.
August Burns Red - Metalcore
Parkway Drive - Metalcore
A Day to Remember - Metalcore/pop
Sleeping With Sirens - Post-hardcore
Woe, Is Me - Post-hardcore
Pierce the Veil - Post-hardcore, Vic and his brother are icons to the scene.
Oceana - Post-hardcore
Vanna - Metal/Post-hardcore
Dance Gavin Dance Psychedelic Funk/Post-hardcore (This band is just fucking amazing, Jonny Craig in the early days was before his time)
Emarosa - Old Emarosa was well known, they still are going
Confide - Post-hardcore, had an amazing drummer/Clean Vocalist and unclean vocalist.
Dream on Dreamer - Post-hardcore
Of Machines - Epic Post-hardcore
Next new respectable sub genre that's been out there but really hasn't established a firm name for itself?
Trancecore aka "Synth Bands"
Enter Shikari - Probably will be known as mainstream Synth/Trancecore band.
Abandon All Ships - You know these guys
Attack Attack! - Yep
House vs Hurricane - You gotta listen to these guys if you like Post-hardcore, they have amazing songs.
Born Of Osiris - Metal/Synth
Crossfaith - Synth/Metal
Silent Descent - Check them
A Death Among Heroes - Check them
Many more than what I just listed.
and lastly, we have emo sub genre, which I'll only name a few here that deserve to be listed.
Hawthorne Heights - Chris
Escape the Fate - Craig
Falling in Reverse - Ronnie
Blessthefall - Craig
Alesana - If you don't like this band, gtfo out of all Punk, Post-hardcore, emo scenes.
Madina Lake - I seen them live once, and they rocked out. Amazing guys.
This is just a slight review of the most popular scene bands, my personal unique band list I keep secret because I can't reveal amazing underground music for all you hipsters to make non-cool for me haha
I also listen to:
Techno - Trance, Dance&Club, Electronica, Tektonik and Hardstyle
Rock - Alternative and Indie.
Acoustic - Soooo many acoustics
90's
80's
70's
60's
I really hate getting into Metallica heads, or Iron Maiden fans because this music is soo old to me.
I've heard it from my older brothers, dad and sooooo many "behind" fans.
I mean if you listen to Metallica today, you either love them or you don't listen to music like me nearly all day lol.
I didn't live back then, so I'm going to experience my era of music and live it before it dies or embrace the beginning of music history.
Punks dead, but it sprouted a new root
LOL, you started out pretty decent but fucking went downhill and hit rock bottom with Hawthorne Heights.
From an 18 year olds perspective, go home. You blow.