BOSTON — Longtime Sha Na Na member Lennie Baker, who sang lead on the doo-wop favorite “Blue Moon” and appeared in the 1978 hit movie “Grease,” has died at age 69.

Baker died Wednesday in Weymouth, Mass., where he had been briefly hospitalized after developing an infection, his nephew David Baker said.

Lennie Baker spent 30 years touring with Sha Na Na as a vocalist and saxophone player. He performed “Blue Moon” at Carnegie Hall and around the world and often said it was his favorite tune.

With his health failing, he left the group in 2000 and was living in an assisted-care facility for the past two years.

A cousin, Ron Fedele, said Baker “loved to play.”

“He’d pick up a sax, and the crowd would go crazy,” Fedele said Friday. “He was kind of electric – a big magnetic draw. He had a booming voice that would rattle the windows when he sang in the car. And he had a heart of gold.”

Baker appeared with other Sha Na Na members in “Grease,” which featured them under the stage name Johnny Casino and the Gamblers.