Their musical style is characterized by their use of melodic guitar riffs and singing which shifts between growls and shouting. Their music has been called winter metal since Immortal Souls utilizes frosty metaphors in their lyrics and usually creates a cold, wintry atmosphere. The album Wintereich was released in 2007 in Europe on Dark Balance and in the USA through Facedown Records.
Characterized by melodic guitar hooks and vocals that oscillate between growls and screams, Immortal Souls' music has been labeled as winter metal, thanks to the icy imagery employed in their lyrics and the chilly atmosphere they often create. The album Wintereich was released in 2007 through Dark Balance in Europe and Facedown Records in the USA.