It was "The long and winding road", with "For you blue" on the B-side, that was the last hit by the legendary band. It reached # 1 on Billboard in June.
Later, a "Naked version" without Phil Spector's strings and choir, was also released. Frankly, it was a lot better but we did not hear it until almost 30 years later.
You can get the LP HERE. The so called "Naked version" HERE. You can read more about Phil Spector: