Ever hear Rossini’s Sabat Mater? It was written after he had stopped writing operas. It’s a very nice piece. He was a much better all-around composer then either Donzietti or Bellini.
Check out some of the 200 piano pieces Rossini wrote during his final years, known as “Sins of My Old Age”. He dedicated them “to all fifth-rate pianists like myself”, but they’re quite good. Some, like “The Excursion Train”, are exercises in sublime silliness. But some, like “The Little Peas”, are just plain beautiful.