Which epic poem was "Ave Maria" loosely based on, which is used by Wilfred Jackson in Walt Disney's "Fantasia"?
Ave Maria (Schubert) "Ellens dritter Gesang " ("Ellens Gesang III ", D. 839, Op. 52, No. 6, 1825), in English: "Ellen's Third Song", was composed by Franz Schubert in 1825 as part of his Opus 52, a setting of seven songs from Walter Scott's popular epic poem "The Lady of the Lake", loosely translated into German.
Childe Rowland "Childe Rowland" is a fairy tale, the most popular version written by Joseph Jacobs in his "English Fairy Tales", published in 1890. It was based on a Scottish ballad, which is why the text alternates between prose and rhyming stanzas. Joseph Jacobs called the King of Elfland's palace "the Dark Tower" in his version, an addition he made that was not part of the original ballad. This harks to Shakespeare's "King Lear" and Robert Browning's poem "Childe Roland to the Dark Tower Came," but neither of those references have any relation to the fairy tale.