Tony Joe White, the Louisiana singer and songwriter who wrote Brook Benton’s Top 10 hit “Rainy Night in Georgia” and had a Top 10 hit of his own with “Polk Salad Annie,” died on Wednesday in Nashville. He was 75.

His death was announced by Yep Roc Music Group, which released Mr. White’s album “Bad Mouthin’ ” last month. The announcement did not specify the cause, but Mr. White’s son Jody told The Tennessean that he had a heart attack and that “there was no pain or suffering.”

Mr. White’s style, a mix of blues, country and rock ’n’ roll sung in a deep, growling voice, came to be known as swamp rock and earned him the nickname Swamp Fox. His songs were covered by Elvis Presley, Tina Turner, Waylon Jennings and many others.