"How High the Moon" - Jeff Beck's tribute to Les Paul
From the sound of it, I would guess that this singer has about 3 parts (2 recorded).
(It's funny how her British accent disappears when she starts singing. What's up with that? <snicker>)
Mary Ford did 26 parts and the difference is noticeable.
But it's still a good live rendition of this tune by Les Paul and Mary Ford.