Bakersfield country was a reaction to the slickly produced, string orchestra-laden Nashville sound, which was becoming popular in the late 1950s. One of the first groups to make it big on the West Coast was the Maddox Brothers and Rose, who were the first to wear outlandish costumes and make a "show" out of their performances. Artists such as Wynn Stewart used electric instruments and added a backbeat, as well as other stylistic elements borrowed from rock and roll. Important influences were Depression-era country music superstar Jimmie Rodgers, early 1950s honky tonk singer Lefty Frizzell, and 1940s Western swing musician Bob Wills.