The initial appearance of the songs Blanche sings being saccharine and lyrical in the bathtub covers up the reality of their words, manipulating music as a plastic theatre convention. "It's a Barnum and Bailey world, Just as phony as it can be, But it wouldn’t be make-believe, If you believed in me"- Barnum and bailey is a circus act, implying that the whole world is a show put on, possibly mirroring Blanche's self awareness of her apperance being a "trick". The second half is also foreshadowing her downfall with Mitch, "Never inside, I never lied in my heart"
S3- "I'm an old maid school-teacher!" BLANCHE- Calls herself old, acts higher than other people so to veil her belief that she has become unattractive. Also acts as fishing for compliments, waiting for anybody to give her the validation that she so craves following the loss of her looks