The late country superstar Conway Twitty's 90th birthday was September 1. To celebrate the milestone, the crooner's legacy is remembered by his biographer and country music historian Michael Kosser.

With a voice as deep as his pompadour was high, Conway Twitty scored 55 Number One country hits by 1990, with his biggest, “Hello Darlin’,” released 50 years ago on March 23rd, 1970. Its spoken ...