credits of episodes that ended on a  sombre note such as the news about the sinking of the Titanic. The  polka theme was set to lyrics by Alfred Shaughnessy and sung as a  bawdy song "What are we going to do with Uncle Arthur?" during a  music hall act by Sarah (Pauline Collins (qv)) in the episode  _"Upstairs, Downstairs" (1971) {For Love of Love (#1.13)}_ (qv).