Create a separate task from a completed or stopped task's original recording, retaining the original. Call it only when the user asks for a new transcription, never merely to fix notation. If the user corrects instruments while it is running, first stop its active transcription and read status until cancellation.phase=stopped; then review the complete corrected instruments and obtain a fresh price consent where required. provider selects local, piano or mirelo; view defaults to the original display preference. Notation-only sources and missing recordings are rejected. Pro holds instrumentation and price consent; replay_only is limited to exact saved results for configured accounts. Returns the new job identifier, processing limit and current status.