I think any song should sound good just played on a solitary instrument with the vocal. If you have those basics you have all you need. The production then just polishes that idea into the finished thing.
Gary NumanI met Gemma, my wife, when she was 12. She had a schoolgirl crush on me and her dad had arranged for her to meet me. Later, she started coming to my concerts, but I only got to know her well after her mother died. I rang to see how she was, and that's how it started.
Gary Numan