Excalibur (rock opera) influenced by Celtic music
Excalibur is a three-part "Celtic rock opera" written and directed by Breton folk-rock musician Alan Simon, the first part of which premiered in 1998, and was released as an album in the following year under the French title Excalibur, La légende des Celtes. Its success in France led to two more albums and two novels. In 2009 a spectacular adaptation combining material from the first two albums was performed in Germany under the English title Excalibur: the Celtic Rock Opera, with great success. It was extended with material from the third album in 2011.