allow me:
Thrash Metal: The thrash movement owes a hell of a lot to the sex pistols, who came up with the idea of going fast. After that, a whole bunch of bands popped up who liked the idea. Thrash is basically normal heavy metal, except played, well, fast. not much difference, except that theres much less vocalizing and much more solos. Along with it goes hardcore, which is just some crappy bands making noise. most of it doesn't even keep a rhythm well.
Representative Bands: Metallica, Anthrax, Slayer, Exodus, Testament
Death Metal: My personal favorite, death metal is about making awesome music. although there are a lot of bands who seriously suck, the ones that are good more than make up for it. death is basically a stepping stone between black and thrash metal in terms of speed. because of this bassists are required to possess much more skill. drummers also end up having to keep a much faster tempo, so their workload is increased. and the vocals are growled in a voice simliar to cookie monster, and the lyrics are either focused on the various forms of homocide and mutilation, or on satanism.
Representative Bands: Death, Deicide, Morbid Angel, Cannibal Corpse
Black Metal: Balck Metal has 2 halves: those seeking to create an atmosphere, or those trying to create the rawest metal imaginable. the first type is rightfully represented by Emperor and Children of Bodom, Emperor featuring symphonic elements, and Children of Bodom having a keyboard player. The second halve is represented by Darkthrone and Mayhem, who are just about making the fastest intelligible music imaginable, and making it sound good. guitarists are basically faster, bassists dispense with the complicated rhythms and just keep a steady pace, but drummers are expected to keep blast beats, for those who dont know, really really really fast beats. vocals and lyrics are basically a derivative of death metal singing, with a mixture of a screech and cookie monster. lyrics are basically satanic and bloody, but also include some fanatasy stuff.
Representative Bands: Mayhem, Emperor, Darkthrone, Immortal, Children of Bodom
Grind/Core: A relatively small movement, grind/core is about the fastest music, intelligable or unintelligable. the guitars are so fast they almost sound ambient, the drums are faster than physically possible, and everything else is so loud that u cant hear the bassist even if u wanted to. the vocals are basically death metal vocals, and the lyrics depend on the band, though the two main ones are basically gore and politics.
Representative Bands: Carcass, Napalm Death
Doom Metal: A very obscure genre thats basically black-sabbath worship. tempos are slowed to the point that they probably change some law of physics that causes a moving car playing it to go backward. guitars are the sludgiest, slowest, downtuned things on the planet, and the bass is up in the forefront. drums keep the rythm, which is fairly easy. vocals are generally either operatic or growl. lyrics are either satanic, or often christian themed
Representative Bands: Candlemass, Pentagram, Sleep, Paradise Lost, Black Sabbath.
ripped this off another board, should be ok...
and the emocore pic has got to be the biggest display of pathetic gayness ever. nice job @whoever posted it