The Green Hills of Earth final, titular verse. Heinlein wrote several fragments of lyrics and six full stanzas for the song. Moore and Kuttner also give fragments of lyrics in "Quest of the Starstone." The fragments have been filled out and additional stanzas added by the filk community. Some versions combine Heinlein's and Moore's lyrics. The song's meter allows it to be sung to a number of popular tunes, including "Amazing Grace"; "Greensleeves"; "The House of the Rising Sun"; "The Rising of the Moon" / "The Wearing of the Green"; Friedrich Schiller's "Ode to Joy" (used in Beethoven's Ninth Symphony, fourth movement); "Oh My Darling,
Symphony No. 4 (Beethoven) the first movement, which Leonard Bernstein described as a "mysterious introduction which hovers around minor modes, tip-toeing its tenuous weight through ambiguous unrelated keys and so reluctant to settle down into its final B major." Hector Berlioz was so enamoured of the symphony's 2nd movement that he claimed it was the work of the Archangel Michael, and not that of a human. Robert Schumann called Beethoven's graceful Fourth Symphony "a slender Greek maiden between two Norse giants" (i.e., the more ponderous 3rd and 5th). According to musicologist Robert Greenberg of the San Francisco Conservatory of Music: Symphony No. 4 (Beethoven)