This early pandemic recording (May 2020) seems a good Christmas offering, something about Tony Bennett, the singer who made this lush pop tune popular back in the Eisenhower days, even before my time. 
To me this tune is a great example of a great arrangement, you really can’t do the proper accompaniment without playing the two main parts. The chords are basic and provide a pleasing harmony to the melody. But it’s the line the piano is playing against the chords (a clever arpeggio of the chord), it turns out, that gives the song its swing, its groove. The melody, applied over the top, even loosely, cannot help but be at its most beautiful, set off this way by the other two parts. My Christmas elf’s hat is off to the arranger of this great tune.
To the musically hip, check out a fatal flaw in the underlying loop, every time the top comes around (and dig the riff from Santana’s first album in the bluesy final chorus, and a guest vocal from Sekhnet at the very end).
“I Left My Heart in San Francisco” is a popular song, written in the fall of 1953 in Brooklyn, New York, with music by George Cory and lyrics by Douglass Cross and best known as the signature song of Tony Bennett. Wikipedia