David Blue, a singer with roots in the 1960's Greenwich village folk-music revival, died of a heart attack Thursday while jogging around Washington Square Park. He was 41 years old.

Mr Blue, who was born Stuart David Cohen, moved to New York in 1960 to become an actor. He was part of the circle in Greenwich village that included bob Dylan, Tom Paxton and Eric Anderson. Starting in 1971, he made eight albums for the Warner-Reprise and Elektra-Asylum labels. He was a participant in Mr Dylan's "Rolling Thunder Revue" tour of 1976.

As an actor, Mr. Blue appeared in Wim Wender's "An American Friend" and was the narrator in Mr. Dylan's film, "Renaldo and Clara." He also played a role in Neil Young's "Human Highway."

He is survived by his wife, Nesia, and his parents. Last night Joni Mitchell, Kris Kristofferson and Bob Neuwirth took part in a Los Angeles memorial service for him. A funeral will be held today at the Gramercy Chapels, 152 Second Avenue, at 1 P.M. A memorial service is scheduled for Sunday from 2 to 4 P.M. at the Chinese Chance restaurant, 1 University Place.