Two Degrees of Separation (from me) by PotatoD

Question 7

For a year and a half in the early '70s, my family rented a house in Arlington, Virginia, that was said to have belonged to this American contralto, best known for her rendition of "God Bless America," so I'm two degrees of separation from her as well. Or maybe it was her mother's house, I don't remember. What do I know? I was in elementary school. Name the singer.

Kate Smith