A signature of Kürsch's songwriting is his practice of
overdubbing his own voice multiple times in complex, overlapping harmonies on his recordings, creating the atmosphere of a huge choir. The track "Chant" on the first
Demons & Wizards album is vocal only, in the style of a traditional
Gregorian chant; Kürsch's is the only voice on the song. Kürsch's lyrics revolve around various themes prevalent in the
power metal genre, including medieval fantasy,
J. R. R. Tolkien, religious/mythological tales, and legends/stories, both his own and from the literary world. His lyrics in the first Demons & Wizards album tackle various themes, whereas "Touched by the Crimson King" was based primarily off different fantasy novels. Although mostly known for being a clean singer nowadays, Kürsch's early technique made use of a harsher, "screaming" technique. He can be heard using similar, more aggressive, technique while singing guest vocals for
Heaven Shall Burn's cover of "Valhalla". ==Personal life==