<Li> Jump up ^ "The Ring". SFOpera . Retrieved 2017 - 10 - 24 . </Li> <Li> Jump up ^ Diane Haithman (2009 - 02 - 15). "Achim Freyer is consumed by' The Ring of the Nibelung"'. LA Times . Retrieved 2017 - 04 - 29 . </Li> <Li> Jump up ^ Adams, Guy (2010 - 05 - 15). "Wagner star and director clash in US costume drama". The Independent . Retrieved 2017 - 04 - 29 . </Li> <Li> Jump up ^ "55th Annual GRAMMY Awards Nominees: Classical". Grammy.com . Retrieved 10 February 2013 . </Li>

Where was wagner when he wrote his essays and began der ring des niebelungen