They don't know
Tracey Ullman (born December 30, 1959 in Hackbridge) an English comedienne, was a pop star for a brief spell in the early '80s before resuming her focus on acting. She had six singles in the British Top 100 in a 19 month span from March 1983-October 1984. Melody Maker once described her retro '60s style sound as somewhere between "Minnie Mouse and the Supremes".
In 1982 while starring on the BBC TV programme "Three of a Kind", Ullman was persuaded to record an album "You Broke My Heart in 17 Places" for Stiff Records