Who portrayed Venus in a 1845 opera about struggle between sacred and profane love, and redemption through love?
Tatiana Troyanos: Tatiana Troyanos (September 12, 1938 – August 21, 1993) was an American mezzo-soprano of Greek and German descent, remembered as "one of the defining singers of her generation" ("Boston Globe"). Tannhäuser (opera):  The story centers on the struggle between sacred and profane love, and redemption through love, a theme running through much of Wagner's mature work.
i don't know