Original two-person drama recording brief

Person 1: The letter was already open when I arrived.
Person 2: Then someone knew you were coming.

Record each line separately in a voice you are permitted to use. Person 1 occupies frame left and person 2 frame right. Keep those assignments stable in the input image and take record. Approve wording, pronunciation and pauses before generation.

The downloadable tone exercise contains no speech or voices. A and B are separate mathematical tones. Its sequential example uses a 250 ms gap and two 1500 ms padded tracks. This is audio preparation, not LongCat inference or lip-sync validation.