Hans von Bülow called the prelude "suffocation", due to its sense of despair. According to George Sand's daughter Solange, George gave a title to each of Chopin’s Preludes. The titled score is lost, but Solange believed that the title "Quelles larmes au fond du cloître humide?" "What tears from the depths of the damp monastery?", corresponds to Prelude No. 4.
