Sebastien is a Czech power metal band from Pardubice and Brno. The band was formed by Jiří "George" Rain in 2008.

Roland Grapow is a German guitarist and music producer. He is best known for his time in the power metal band Helloween, with which he played for twelve years, after replacing founding member Kai Hansen. He subsequently created the power metal band Masterplan in 2001, which is still active today.