Question: Which western swing musician, known as the "king of western swing", helped write the song "Time Changes Everything"?
Related documents: [0]  [DOC] James Robert Wills (March 6, 1905 – May 13, 1975) was an American Western swing musician, songwriter, and bandleader. Considered by music authorities as the co-founder of Western swing, he was universally known as the King of Western Swing (after the death of Spade Cooley who used the moniker "King Of Western Swing" from 1942 to 1969). [END] 
[1]  [DOC] "Time Changes Everything" is a Western swing standard with words and music written by Tommy Duncan, the long-time vocalist with Bob Wills and the Texas Playboys. Written as a ballad, the lyrics tell of a failed romance and of the hurt that has healed. Each verse ends with: [END] 
Answer: 
Bob Wills
Bob Wills