Anonymous wrote:At least it's not loud sex.
+1
If he can't/won't move the piano and he won't stop playing in the evenings, consider soundproofing your space.
The noise ordinances are usually for much later at night or for noise that is excessively loud. You can have someone measure the decibels and compare that to your local noise threshold ordinance. It is probably below that or other neighbors would be complaining as well.
When I lived in Chapel Hill, my neighbor was a bagpiper. I adjusted.