Excalibur IV" is the eagerly awaited new studio album from the Celtic Rock Opera series, which has been awarded Gold and Platinum. In 2016,"Excalibur IV" was performed live in 12 German arenas in full length, and further tour dates are planned for next year. The new album is based on the famous story of King Arthur and includes guest appearances by Alan Stivell, Michael Sadler (Saga), Jesse Sibenberg & John Helliwell (Supertramp), Martin Barre (Jethro Tull), Moya Brennan (Clannad), Roberto Tiranti (Labyrinth), Bernie Shaw (Uriah Heep), Siobham Owen, Sonja Kristina (Curved Air).