Heilung's song "Nesso" is a chant in Old High German that is meant to invoke the power of a magical spell. The lyrics tell of a worm with nine offspring that is being expelled from the body, starting from the deepest part of the body and working its way out. The spell is directed at the worm, with the speaker commanding it to leave the body and be guided by a mystical force. The word "Nesso" itself is believed to be a reference to the Norse deity Nidhogg, a serpent that gnaws on the roots of the world tree Yggdrasil. In this context, the song may be seen as a kind of exorcism, driving a negative force out of the body and back into the natural world. Overall, the song is meant to be a powerful invocation of spiritual energy, with the repetition of the chant intended to create a ritualistic atmosphere. Heilung's music draws heavily on traditional Germanic and Scandinavian musical styles, with an emphasis on tribal drumming and hypnotic, trance-like melodies. "Nesso" is a prime example of this style, blending ancient mythology with modern sonic textures to create an intense and otherworldly experience.