Sigma by Raven of Light
Raven has released 2 CDs with the German Keyboardist and Songwriter Rafael Jarzabek. He has been a singer-songwriter noted for his lyrics and guitar playing since the late '70s.
In 2014 he became interested in electronic music and began to produce progressive chillout music. To date, he has recorded over 900 tracks and plans to continue doing so for many years to come.