Lithograph Crayon Grain Study Narration

Inputs: [authorized lithograph detail], [artist medium notes], [three marked study areas]. Describe the grain and mark density in a documented crayon lithograph. Compare the three supplied regions without inferring stone preparation, chemical recipes or exact tool pressure. Preserve the difference between visible observation and artist-provided process notes. Produce a 40-second gallery narration moving from sparse grain to dense marks using the supplied regions. Adapt the presentation to [audience] and [tone]. Check the defining task detail against the inputs before finishing.

Use only the supplied facts and approved wording. If a necessary script or timing reference is missing, ask for it first. Produce the audio when supported; otherwise return the complete spoken script with pauses and a short production cue sheet, clearly labeled as a script. Use original voices and keep speech intelligible without music. Never claim an audio file exists unless it was generated.