Music Lane: Long shot, but..... by Phaedrus

I'm looking for music that is often played at funerals, and last week on tv it was used in a rather new documentary on - and in - Central Park New York, where the presenter sat down with actor Richard Dreyfuss and discussed the beauty and attraction of Central Park. Dreyfuss even joked that the particular rocks they were sitting on were probably the only original material of Central Park, all the rest was "imported".

The music is solo piano with string accompaniment, might be the slow movement of a Piano Concerto by Mozart or Chopin.

If anyone knows, it's one of you. Many thanks in advance.

BTW: I've tried googling, but to no avail.