James Robert "Bob" 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.)