Dark wave
Dark wave (also typeset as darkwave) is a music genre that emerged from the new wave and post-punk movement of the late 1970s. Dark wave compositions are largely based on minor key tonality and introspective lyrics and have been perceived as being dark, romantic and bleak, with an undertone of sorrow. The genre embraces a range of styles including cold wave, ethereal wave, gothic rock, neoclassical dark wave and neofolk.In the 1980s, a subculture developed primarily in Europe alongside dark wave music, whose followers were called wavers or dark wavers. In some countries such as Germany, the movement also included fans of gothic rock (so-called trad-goths).

1980s: Origins
Since the 1980s, the term has been used in Europe to describe the gloomy and melancholy variant of new wave and post-punk music. At that time, the term "goth" was inseparably connected with gothic rock, whereas "dark wave" acquired a broader meaning, including music artists that were associated with gothic rock and synthesizer-based new wave music.
The term darkwave originated in the 1980s as an indicator of the dark counterpart of new wave. Bands such as Siouxsie and the Banshees, Cocteau Twins, Soft Cell, and Depeche Mode are exponents of this first generation of darkwave. Darkwave ... employs relatively slower tempos, lower pitches, and more minor keys in its musical settings of melancholy texts than new wave.
The movement spread internationally, developing such strands as ethereal wave, with bands such as Cocteau Twins, and neoclassical dark wave, initiated by the music of Dead Can Dance and In the Nursery. Simultaneously, different substyles associated with the new wave and dark wave movements started to merge and influence each other.German dark wave bands were partially associated with the Neue Deutsche Welle (i.e. German new wave). Other bands, such as Malaria! and the Vyllies, added elements of chanson and cabaret music, which became known as cabaret noir (or "dark cabaret", a term popularized by U.S. dark wave label Projekt Records).

1990s: Second generation
After the new wave and post-punk movements faded in the mid-1980s, dark wave was renewed as an underground movement. Ataraxia and The Frozen Autumn from Italy, and the French Corpus Delicti also evolved from this movement and became the leading artists of the west Romanesque scene. These bands followed a path based on the new wave and post-punk music of the 1980s.
In the 1990s, a second generation of darkwave bands became popular, including Diary of Dreams, Deine Lakaien, and The Frozen Autumn... The German band Deine Lakaien ... is audibly influenced by the dark synthesizer sounds of Depeche Mode.
At the same time, a number of German artists developed a more theatrical style, interspersed with German poetic, metaphorical lyrics, called Neue Deutsche Todeskunst (literally New German Death Art). Other bands combined synthesizers with elements of neofolk and neoclassical dark wave.
After 1993, in the United States the term dark wave (as the one-word variant 'darkwave') became associated with the Projekt Records label, because it was adopted by the label founder Sam Rosenthal after leafing through the pages of German music magazines such as Zillo, and has been used to promote and market artists from German label Hyperium Records in the U.S. (e.g. Chandeen and Love Is Colder Than Death).
I first became aware of the term "Dark Wave" back in 1992. It appeared in German magazines – such as Zillo – describing a style of European music that followed other "waves" such as New Wave ... I found those two words ("dark" and "wave") quite interesting. This was something underground, submerged, obscure... which swept over you, immersed you, surrounded you. It was a poetic phrase that could describe many different sounds. At the time, I was looking for a name for my little mail-order company. I wanted something that would encompass the variety of music available in my catalog.
Projekt featured bands such as Lycia, Black Tape for a Blue Girl, and Love Spirals Downwards, some of these characterized by atmospheric guitar and synth-sounds and female vocals. This style took cues from 1980s bands like Cocteau Twins and is often referred to as ethereal dark wave. Projekt has also had a long association with Attrition, who appeared on the label's earliest compilations. Joshua Gunn, a professor of communication studies at Louisiana University, described the U.S. type of dark wave music as

an expansion of the rather limited gothic repertoire into electronica and, in a way, the US answer to the 'ethereal' subgenre that developed in Europe (e.g. Dead Can Dance). Anchored by Sam Rosenthal's now New York-based label Projekt, dark wave music is less rock and more roll, supporting bands who tend to emphasize folk songcraft, hushed vocals, ambient experimentation, and synthesized sounds [...] Projekt bands like Love Spirals Downwards and Lycia are the most popular of this subgenre.

2010s: Revival
In the 2010s, a new generation of bands rekindled the darkwave genre for a new generation of fans. The most prominent of these acts is Boy Harsher, but others include Drab Majesty, Pixel Grip, Kontravoid, Spike Hellis, MVTANT, Choke Chain and Void Vision. Substance is an annual Darkwave and Industrial music festival occurring in Los Angeles which began in the 2010s.  Meanwhile, Verboden is an annual Darkwave festival in Vancouver, British Columbia.

See also
Ambient music
Dungeon synth

References
External links
 Media related to Dark Wave at Wikimedia Commons