I had a song intermittently stuck in my head for over a decade, couldn't remember the artist, song name, or any of the lyrics. I only had the genre, language it was in, and a vague, memory-degraded description of a music video. Over the years I'd tried to find it on search engines a bunch of times to no avail, using every prompt I could think of. ChatGPT got it in one. So yeah, it's very useful for stuff like that. Was a great feeling to scratch that itch after so long. But I wouldn't trust an LLM with anything important.