Sorry, I never heard of her, nor her song, "the Little Blue Man." Couln't have been that big a hit. The few words spoken by the boy in the video, are definitely his own. To my knowledge, Hugh knew and worked with the woman. This blurb appeared in the media in 1957,".... SHE WAS THEN HIRED BY JACK PAAR FOR HIS TV SHOW, "TONIGHT." THIS LED TO A RECORD CONTRACT WITH ATLANTIC RECORDS IN 1958,FOR WHICH SHE HAD HER NEXT BIG HIT, "LITTLE BLUE MAN." Hugh, was a regular on Paar's show at that time -- perhaps that's why the association. But, Hugh was never a singer,and I could hear no other voice other than Ms. Johnson and the blue boy.
Also, at that time, Hugh and he was busy getting ready for his new show, CONCENTRATION.