George A. Robertson, Jr. is an American singer and songwriter. Better known as Austin Roberts, he enjoyed top 40 mainstream success with his 1972 song "Something's Wrong With Me" and 1975's "Rocky". He also wrote many hits, including "Keep On Singing" (which became a top 15 hit for Helen Reddy in 1974). Robertson was hired to perform the "chase songs" that were added to the second season of Scooby-Doo, Where Are You!. He also did a new rendition of the theme song, having replaced Larry Marks.