Campbell's hits include "Galveston", "By The Time I Get to Phoenix", "Wichita Lineman", "Try a Little Kindness", "Gentle On My Mind", "Sunflower", and "Hey Little One". Many of his hits were written by Jimmy Webb. In 1975, Campbell had his biggest hit, "Rhinestone Cowboy". The song became a phenomenon, and rhinestone-covered clothing became a fad.