sentences:  Waterman himself would hone the track, including having MacColl and Rosemary Robinson (the wife of Stiff Records president Dave Robinson) "add Shangri-La-type backing vocals", in Waterman's words, and having MacColl reprise her original "bay-ay-be-ee” to intro the third verse (as Ullman had a limited high-end range).Held off from the number one position on the UK singles charts dated the 15th and 22 October 1983 by "Karma Chameleon" by Culture Club - the eventual number-one single for the year, then in the fourth and fifth week of its six-week number one tenure - "They Don't Know" would be ranked at number 23 on the year-end tally of UK chart singles, and would afford Ullman a number-one hit in Ireland for two weeks, also spending nine weeks at number one in Norway.MTV-cofounder Robert Pittman saw the video made to promote Ullman's "They Don't Know" (see section 3.3 below) and, despite Ullman having nil exposure in the US, Pittman invited her to be a guest MTV VJ for the week of February 13–18, 1984 with a resultant positive response which caused MCA Records to rush-release "They Don't Know" as Ullman's debut US single, which eventually reached number eight on the "Billboard" Hot 100 and number 11 on the Adult Contemporary.