Wagnerian singers with the power and the physical stamina to sing the roles are somewhat rare.
From the sfgate.com
Wagnerian sopranos usually play mythic heroines.
From the en.wikipedia.org
Wagnerian singing declined, while superstars such as Maria Callas and Joan Sutherland explored neglected Italian bel canto repertory.
From the post-gazette.com
Wagnerian, mythic and muddy, it's something vast and strange being born, like a planet being fashioned out of primal elements and impersonal forces.
From the time.com
Wagnerian singers train their whole lives, building up tone and volume until they can cut through all the instruments for the five-odd hours of each opera.
From the thenewstribune.com
More examples
Of or relating to Richard Wagner or his music
A follower of the theories or an admirer of the music of Richard Wagner
Wilhelm Richard Wagner (22 May 1813 13 February 1883) was a German composer, conductor, theatre director and essayist, primarily known for his operas (or "music dramas", as they were later called). ...