Well, that is a weird experience for me. I've must have sold thousands of piano compositions and theory courses over the years. Recently I started writing string quartets because I got a bit bored, but according to the stats hardly anyone is interested. There aren't less visitors, even more (thanks to Covid), so it must be the instruments.
I'm retired now so I don't need the money. The thing is, I plan on writing about 18 or more short string quartets within a year, but had I known this, I would have moved on to my next project, concertos for chamber orchestra. Or will that be a disaster as well? I hope not. There's not much I can do otherwise. I'm not really into bird watching, knitting or weaving baskets.
What are your experiences? Is piano the most popular instrument in this genre?