Not the only one in NYC, but probably the best known.
This park is a true blessing, lungs of green in the middle of steel and concrete. At Strawberry fields, the Lennon memorial, we got spoiled by a choir of youngsters singing their best. (video see below)
At Bethesda terrasse was a young lady performing with a voice that made you shiver. Open air opera.

Remember this was late October and thanks to the Indian Summer we had an extraordinary time.