BLANCHE: Something has happened!- What is it?
STELLA [fuming away quickly]: Why, nothing has happened, Blanche.
BLANCHE: You’re lying! Something has!
[She stares fearfully at Stella, who pretends to be busy at the table. The distant piano goes into a hectic breakdown.]
– Tennessee Williams
A Streetcar Named Desire, Scene 7. After Stanley reveals Blanche’s promiscuous past to Stella, Blanche realizes that something has gone wrong. Stella lies to her that nothing has happened, while the blue piano goes into "a hectic breakdown." This foreshadows the disaster about to befall Blanche and mental breakdown she will have.