If those cartoons had been made out in the sticks, the soundtracks would have been Western swing. The main difference between the two styles is the instruments — jazz swingers didn’t play fiddle, for one thing. They also didn’t have country music’s independent spirit, which is why jazz swing now seems sort of homogenous, especially compared to Western swing.
Just as Bill Monroe is considered the father of bluegrass, Bob Wills is often recognized as the king of Western swing. Wills’ influence is so widespread, he’s a member of both the country and rock halls of fame. As Rich Kienzle points out in his extensive liner notes to the Bob Wills and His Texas Playboys box set, Wills was the first country bandleader to regularly use a drummer. To his standard accents of fiddle, banjo, and steel and electric guitars, he also added brass and reed sections.