Schoolhouse Rock animation singer Jack Sheldon dies

Jack Sheldon, Merv Griffin's trumpet-playing sidekick, dies at 88 [in print as Marv's sidekick, gravely voice of 'Schoolhouse Rock']

By Associated Press 

Washington Post Jan. 9, 2020

online at https://www.washingtonpost.com/local/obituaries/jack-sheldon-merv-griffins-trumpet-playing-sidekick-dies-at-88/2020/01/02/c1ccc01a-2d96-11ea-bcd4-24597950008f_story.html