At 89, André Previn — the pianist, conductor and composer — has bought an Upper East Side co-op for $999,000.

Previn and his ex-wife, Mia Farrow, are parents to their adopted daughter, Soon-Yi Previn, who went on to marry her mother’s ex-partner Woody Allen.

The 12th-story co-op, at 130 E. 63rd St., sold for its $999,000 asking price.

The one-bedroom dwelling is 1,000 square feet.

It features a foyer that opens to an oversize living area and a dining room.

Tristan Harper and Nikola Stojic of Douglas Elliman had the listing.