Hypomanie was founded as a black metal project and stayed so for the first three releases. With the release of the self-titled EP, a more post-punk orientated sound was used, mixed together with the vocals from his earlier work. After, Selwin decided to leave black metal and began to play an instrumental shoegaze style, with some slight post-black metal influences.
In the rainy spring of 2012 a third album, Calm Down, You Weren't Set On Fire, has been released.