 DATE: In one scene, Beethoven refers to his "Moonlight Sonata"  (Sonata 14, Opus 27, No. 2). However, the piece did not come to be  known as "Moonlight" until 1832, several years after Beethovens  death, when it was given the nickname by poet Ludwig Rellstab. The  true title of the piece, as Beethoven wrote it, is "Quasi una  Fantasia".