I too believe it would fall under fair use.
A few years ago I contacted a company asking if it was OK to sample one of their instruments and to share those samples.
They never got back to me, so I assume they were fine with it.
There’s free and even online photo editors that you can use to remove logos, or just use a generic piano picture in case you want to be safe.
I use pictures from Unsplash in some of my instruments.
https://unsplash.com/s/photos/piano
Best,
Anders
