In 1801 Beethoven composed the second Sonata quasi una fantasia from Opus 27, that his contemporaries named the Bower Sonata, while imagining it had been composed in the shade of a bower. The famous title “Moonlight” was given by the poet Ludwig Rallstab (who later wrote the librettos for several Lieder by Schubert) who saw in this sonata a night sail, in the moonlight, on the Four Cantons Lake.