Misc: In 1934 ---------- Eden (in Arizona), actor (I dream of Jeannie), born. ?

Questions

Bach's "Goldberg Variations" are best known today through the recording of this Canadian pianist. ?

What composition was structured on a single theme repeated over and over ?

This famours astronomer was the son of a composer. ?

What poem by Goethe inspired music by Wagner, Schumann, Gounod, and Liszt ?

This composer born in 1875 is of Basque origin. ?