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. 9 (Beethoven) more pleasing and more joyful ones!"). \relative c' { </score> At about 24 minutes in length, the last movement is the longest of the four movements. Indeed, it is longer than some entire symphonies of the Classical era. Its form has been disputed by musicologists, as Nicholas Cook explains: Cook gives the following table describing the form of the movement: In line with Cook's remarks, Charles Rosen characterizes the final movement as a symphony within a symphony, played without interruption. This "inner symphony" follows the same overall pattern as the Ninth Symphony as a whole: The movement has a thematic