The confusion of street cries works like a choral chant, perfectly mirroring Blanche's mental state and confusion about why Stella returned to Stanley. This cacophony of voices reflects the chaos in Blanche's mind as she struggles to understand her sister's choices.

When a train approaches, the characters fall silent until the noise fades away. This creates brilliant dramatic tension between the women as their argument pauses, leaving the audience hanging on every unspoken word.

The blue piano motif repeats throughout the play, representing how Blanche constantly replays her idealised version of life in her head. It's also Williams' way of connecting the story to the authentic sounds of New Orleans.

Pro tip: Notice how Williams uses everyday sounds to reveal what's happening inside characters' minds - this technique appears in your exam texts too!

Morning sunlight creates a serene atmosphere on Stella's face, showing how peaceful she appears despite the dramatic events of the previous night. This contrast between light and dark events highlights the complexity of the characters' situation.

As scenes end, Williams uses lingering brightness on Stella and Stanley's embrace. This lasting light symbolises the enduring strength of their relationship, no matter what chaos Blanche brings into their lives.

The blue piano serves as a powerful symbol throughout the play. It represents Blanche's tendency to replay traumatic life events over and over in her mind, showing how she's trapped by her past experiences and unable to move forward.

Remember: Williams' symbols often work on multiple levels - the blue piano connects to both Blanche's psychology and the New Orleans setting!