Billy Wayne "Crash" Craddock is an American country and rockabilly singer. He first gained popularity in Australia in the 1950s with a string of rockabilly hits, including the Australian number-one hits "Boom Boom Baby" and "One Last Kiss" in 1960 and 1961, respectively. Switching to country music, he gained popularity in the United States in the 1970s with a string of top-10 country hits, several of which were number ones, including "Rub It In", "Broken Down in Tiny Pieces", and "Ruby Baby". Craddock is known to his fans as "the King of Country Rock Music" and "Mr. Country Rock" for his up-tempo, rockabilly-influenced style of country music.