There seem to be more than 1 artists that go by the name of Morrigan 1. A German Black Metal band, formed by ex-members of Mayhemic Truth. See here for the band's biography.
2. A Japanese solo artist who works with the "WAVE" doujin circle. Mainly produces touhou arranges.
3. A German (Fulda, Hesse) Melodic Power Metal band formed in 1997,now split-up.(http://www.metal-archives.com/band.php?id=1667)
4. A vocal trio from Seattle specializing in nautical songs.
Morrigan
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