Metalhead 1: Fuck this band. They're too slow.
Metalhead 2: (asleep)
Metalhead 3: Sheesh. You guys don't appreciate the heaviness of doom metal at all, do you?
Person #2 "We'll listen to Candlemass, and if you interrupt the music at any time I will be forced to stop at Guitar Center and stab you in the eye with the headstock of a Jackson soloist model."
Doom metal developed further in the early 1990s, when a number of bands started combining the slow, melancholic, doom metal style that was pioneered in the 1980s with influences from death metal and other forms of extreme metal, including growled vocals. The first band to combine these styles may have been the heavily Celtic Frost-influenced Winter, although this style is generally associated with and made popular within mainstream heavy metal by three British bands: Paradise Lost, My Dying Bride and Anathema. Nowadays, the original brand of doom metal with clean vocals is usually labelled "classic doom", whereas the later developed styles which involve growled vocals are commonly called "death/doom", more recently even "nu-doom".
During the 1990s the doom metal genre developed further styles, although classic doom and death/doom have remained central to the present. A number of bands, such as The Gathering and Theatre of Tragedy took the music of Paradise Lost, got rid of some of the slowness and started experimenting with female vocals*, thereby helping to create the generally more accessible genre of gothic metal. Although this genre is generally considered to be influenced by doom metal, it is not usually considered a subgenre of doom metal: certain elements, such as the slowness and the emphasis on heavy riffing, are often absent. However, other bands emphasised doom metal's distinctive features and created extreme subgenres such as funeral doom and drone doom, pioneered by Thergothon and Earth respectively.
It has been argued that a nexus exists between doom metal, stoner metal and psychedelic music, although each of these genres have developed on their own. The stoner metal of bands like Kyuss, Monster Magnet and Queens of the Stone Age shares with doom metal a heavy sound and a strong Black Sabbath influence, but generally has a different objective: whereas doom metal aims for melancholia, stoner metal aims for a groovy and psychedelic sound. A number of doom metal bands, however, such as (later) Cathedral, Electric Wizard and Darkage have combined doom metal with psychedelic influences, thereby creating a style which can be considered a hybrid form of doom metal and psychedelic rock.
*It should be noted, however, that Paradise Lost themselves made some use of female vocals on their second album, Gothic, in 1990.
Death doom(or doom/death)Metal:Discrucior From Estonia
Doom can also be mixed with other types of music - some bands add a gothic flavour, some a more stoner rock groove, some, such as Forest of Shadows, mix it with black metal.
More upbeat doom - Cathedral, Solitude Aeturnus.
Even though Sabbath was probably a huge inspiration to modern doom metal, it sounds different in some ways.
It's amazing how Doom Metal is smooth, and slow, as much as it is heavy and creepy.
I like it. My Dying Bride would be my fave Dmetal band.
I think Doom Metal tries to capture beauty more than most Metal genres.
I don't know. This is my personal opinion, I guess.