Cleaning up my hard drive, I found these musical experiments I'd made in the past. I may have posted them when I originally made them, but the links would be long-broken. This may be of interest if you want to hear the very good piano sound on the Yamaha S-90ES.
Piano (mostly Natural S from Yamaha S90ES)
Piano plus accompaniment (mostly from S90ES, may contain some Roland XV-5050 parts)