After the dramatic send-off of Bach's music into space aboard Voyager II, Mr. Bach unexpectedly arrives at the house of Elizabeth, a present-day child, who is awkwardly practicing his famous Minuet in G. Along with three of Bach's choir boys, Elizabeth learns about his life - his 20 children, his stay in prison, Anna Magdalena, the exciting family picnics, concerts and his music, including a composition based on a well-loved nursery rhyme. She moves from skepticism to respect for Bach's good-humored nature and musical brilliance. Only at the end do we learn the reason for Bach's visit: 'So that my music will never again be forgotten...for wherever my music is being played, I am alive.'