I like the idea of small, intimate studio audiences kind of like they used to have on shows like MTV Unplugged.
Here's a performance that predates the short-lived MTV show. The Doobie Brothers were some of the most soulful R&B artists of their time. I wish the audio quality for this vid was slightly better but I think their hair. the outfits and the antiquated synths add to the groovy effect of the song.