Definitely very unusual. In case anyone is wondering why the piano sounds so weird, it’s a tack piano Harris is playing; a piano altered to sound (in this case) kind of like a harpsichord. BTW, Harris was a friend of Monk and actually lived with Monk in the Baroness’ pad for a while. Pretty good credentials for doing justice to the tune as well as being a great player in his own right.
https://youtu.be/y79ax9ekqM4
https://youtu.be/y79ax9ekqM4