On 18 September 1966, Juliet Prowse guest starred on "The Andy Williams Show".
Although I was unable to access the full episode, here is a clip of Juliet singing "It's Today!" with Andy Williams and Vic Damone.
What I particularly like about this clip is that it highlights Juliet's singing voice, which we didn't often hear on screen.
http://www.youtube.com/watch?v=WpKiB5BMjg4