Question: "Hello Vietnam" is the title of a song written by Tom T. Hall, the single, with backing vocals from Wright's wife, Kitty Wells, an American pioneering female country music singer, passed away on which date?
Sentence (from "Kitty Wells"): Ellen Muriel Deason (August 30, 1919 – July 16, 2012), known professionally as Kitty Wells, was an American pioneering female country music singer.
Relevant evidence: Yes