Bobby Rydell, a Philadelphia-born singer who became a teenage idol in the late 1950s and, with his pleasant voice, stage presence and nice-guy demeanor,

, maintained a loyal following on tours even after both he and his original fans were well past retirement age, died on Tuesday in Abington, Pa. He was 79.

Mr. Rydell and two other affable performers who became stars in those years, Frankie Avalon and Fabian, grew up within about two blocks of one another in South Philadelphia.

Long after their days on the pop chart were past them, they enjoyed great success on the oldies circuit. The three had toured extensively together since 1985, billed as the Golden Boys.

Mr. Rydell did not just have staying power; he also made a comeback after years of alcohol abuse, which he chronicled in his autobiography, “Bobby Rydell: Teen Idol on the Rocks” (2016),

written with the guitarist and producer Allan Slutsky. Near death, he had a kidney and liver transplant in July 2012. By that October he was back, singing on a cruise ship with Mr. Avalon.

But five months later, he underwent cardiac bypass surgery. Some of his later appearances were charity promotions for organ donation.

By 2014, his schedule was heavy again, including 11 concerts in Australia that February. He continued to perform for the rest of his life.