Jack Sheldon - The Star
I'll bet if there's only one voice you remember when you think of Schoolhouse Rock, it's that of Jack Sheldon
. Conjunction Junction
...I'm Just a Bill
...he was responsible for some of the classics. But aside from Schoolhouse, he was also pretty well known for his day gig, being one of the best jazz trumpeters in history, playing with everyone from Frank Sinatra to Tony Bennett.