Earlier quoted context omitted.
I remember listening — really listening — to a Debbie Gibson song, in the early nineties. She was never an artist I cared about. I just assumed she was a “teenybopper queen.” The song clearly had one -maybe two- musicians in the background, playing a sampler, while she sang. Maybe she played the sampler. I realized it probably cost almost nothing to record that song. She didn’t have a regular band, and probably threw…
There are musicians for hire to play in studio and on the road. Very common practice.
Not quite the same, but in that world though