How much instruction do you need though?

What if I prompt Claude to go prompt Suno? What if the same chain happens internally at Suno? Easy to imagine the human input being very dilute and a small part overall.

The US copyright office ruled that the instructions do not count. Prompt engineering does not constitute human authorship. Prompt is the command, but the machine determines the specific expressive elements of the output (according to the USCO).

Raw LLM output is automatically public domain.

The prompt is yours to copyright, the algorithm belongs to Google or Suno or whoever, but not the output. It is not your creation.