Mister Rogers' Neighborhood (1968)

S28E14 Little and Big: Inventor of a Sphere that Goes from Little to Big

Mr. McFeely shares a videotape featuring his trip to see inventor Chuck Hoberman. Meanwhile, Mrs. McFeely pays a visit to Rogers. In the Neighborhood of Make-Believe, Handyman Negri comes to the aid of Bob Dog and Lady Elaine. Rogers then plays a cassette of cello music, reminiscing about the renowned cellist Yo-Yo Ma and his son, Nicholas.