Ella Fitzgerald - Midnight Sun (1957)

I've long loved this tune for it's lovely harmonies and melodic chromaticism.

In today's robotic vocal Autotuned world, one can only stand in awe of the incredible artistry of masters like Ella, whose exquisite and rare virtuoso talent was embodied in stepping-up-to-the-mic as they say. Such as...

Perfection!

And...
Ella Fitzgerarld - Midnight Sun - Live Cannes Festival 1958

I recall reading somewhere in the past that she also had the gift of perfect pitch and instrumentalists could actually tune to her voice.