Percival or Percival Schuttenbach is a Polish folk metal band from Lubin, formed by musicians due to their fascination with history and historical reenactment in 1999. The name "Percival" refers not to any historical figure, but to the gnome named Percival Schuttenbach from Andrzej Sapkowski's The Witcher series of novels. The leaders of the band are Mikołaj Rybacki and Katarzyna Bromirska. They became known for their song Lazare which was used as soundtrack song for The Witcher 3: Wild Hunt video game.

Source: Wikipedia (https://en.wikipedia.org/wiki/Percival_(band))