Sondheim's score requires equal parts vocal control and dramatic intelligence, and Carpenter brought both. The opening lines — falsely sweet, almost conversational — were delivered with a knowing edge, setting up the song's escalating sarcasm. As the lyric peeled away its layers, moving from politeness to grievance to scorched-earth honesty, Carpenter's vocal calibration kept pace exactly. Each "Could I leave you?" arrived with a slightly different inflection, mapping the character's evolving conclusion in real time.